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195-460: A naval mine is a self-contained explosive device placed in water to damage or destroy surface ships or submarines . Similar to anti-personnel and other land mines , and unlike purpose launched naval depth charges , they are deposited and left to wait until, depending on their fuzing , they are triggered by the approach of or contact with any vessel. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into

390-407: A harbour ; or defensively, to create "safe" zones protecting friendly sea lanes, harbours, and naval assets. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake a resource-intensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where

585-604: A national legal system and international law is complex and variable. National law may become international law when treaties permit national jurisdiction to supranational tribunals such as the European Court of Human Rights or the International Criminal Court . Treaties such as the Geneva Conventions require national law to conform to treaty provisions. National laws or constitutions may also provide for

780-496: A "general recognition" by states "whose interests are specially affected". The second element of the test, opinio juris, the belief of a party that a particular action is required by the law is referred to as the subjective element. The ICJ has stated in dictum in North Sea Continental Shelf that, "Not only must the acts concerned amount to a settled practice, but they must also be such, or be carried out in such

975-886: A UN agency with the mission of protecting employment rights which was established in 1919. The ILO has a constitution setting out a number of aims, including regulating work hours and labour supply, protecting workers and children and recognising equal pay and the right to free association, as well as the Declaration of Philadelphia of 1944, which re-defined the purpose of the ILO. The 1998 Declaration on Fundamental Principles and Rights at Work further binds ILO member states to recognise fundamental labour rights including free association, collective bargaining and eliminating forced labour, child labour and employment discrimination. The ILO have also created labour standards which are set out in their conventions and recommendations. Member states then have

1170-589: A blast upon tipping. Several mine-laying ships were destroyed when their cargo exploded. Beginning around the start of the 20th century, submarine mines played a major role in the defense of U.S. harbours against enemy attacks as part of the Endicott and Taft Programs . The mines employed were controlled mines, anchored to the bottoms of the harbours, and detonated under control from large mine casemates onshore. During World War I , mines were used extensively to defend coasts, coastal shipping, ports and naval bases around

1365-420: A chemically pure compound, such as nitroglycerin , or a mixture of a fuel and an oxidizer , such as black powder or grain dust and air. Some chemical compounds are unstable in that, when shocked, they react, possibly to the point of detonation. Each molecule of the compound dissociates into two or more new molecules (generally gases) with the release of energy. The above compositions may describe most of

1560-634: A degree of water resistance. Explosives based on ammonium nitrate have little or no water resistance as ammonium nitrate is highly soluble in water and is hygroscopic. Many explosives are toxic to some extent. Manufacturing inputs can also be organic compounds or hazardous materials that require special handling due to risks (such as carcinogens ). The decomposition products, residual solids, or gases of some explosives can be toxic, whereas others are harmless, such as carbon dioxide and water. Examples of harmful by-products are: "Green explosives" seek to reduce environment and health impacts. An example of such

1755-403: A dispute, determining if a domestic court has jurisdiction and determining whether foreign judgments can be enforced . The first question relates to whether the domestic court or a foreign court is best placed to decide the case. When determining the national law that should apply, the lex causae is the law that has been chosen to govern the case, which is generally foreign, and the lexi fori

1950-401: A harbour by hand. They can be inexpensive: some variants can cost as little as US $ 2,000, though more sophisticated mines can cost millions of dollars, be equipped with several kinds of sensors, and deliver a warhead by rocket or torpedo . Their flexibility and cost-effectiveness make mines attractive to the less powerful belligerent in asymmetric warfare . The cost of producing and laying

2145-567: A local judgment between the same parties. On a global level, the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards was introduced in 1958 to internationalise the enforcement of arbitral awards , although it does not have jurisdiction over court judgments. A state must prove that it has jurisdiction before it can exercise its legal authority. This concept can be divided between prescriptive jurisdiction, which

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2340-913: A mine is usually between 0.5% and 10% of the cost of removing it, and it can take up to 200 times as long to clear a minefield as to lay it. Parts of some World War II naval minefields still exist because they are too extensive and expensive to clear. Some 1940s-era mines may remain dangerous for many years. Mines have been employed as offensive or defensive weapons in rivers, lakes, estuaries, seas, and oceans, but they can also be used as tools of psychological warfare . Offensive mines are placed in enemy waters, outside harbours, and across important shipping routes to sink both merchant and military vessels. Defensive minefields safeguard key stretches of coast from enemy ships and submarines, forcing them into more easily defended areas, or keeping them away from sensitive ones. Shipowners are reluctant to send their ships through known minefields. Port authorities may attempt to clear

2535-524: A mined area, but those without effective minesweeping equipment may cease using the area. Transit of a mined area will be attempted only when strategic interests outweigh potential losses. The decision-makers' perception of the minefield is a critical factor. Minefields designed for psychological effect are usually placed on trade routes to stop ships from reaching an enemy nation. They are often spread thinly, to create an impression of minefields existing across large areas. A single mine inserted strategically on

2730-487: A multilateral treaty. Where a treaty does not have provisions allowing for termination or withdrawal, such as the Genocide Convention, it is prohibited unless the right was implied into the treaty or the parties had intended to allow for it. A treaty can also be held invalid, including where parties act ultra vires or negligently, where execution has been obtained through fraudulent, corrupt or forceful means, or where

2925-606: A number of countries began to distinguish between acta jure gestionis , commercial actions, and acta jure imperii , government actions; the restrictive theory of immunity said states were immune where they were acting in a governmental capacity but not a commercial one. The European Convention on State Immunity in 1972 and the UN Convention on Jurisdictional Immunities of States and their Property attempt to restrict immunity in accordance with customary law. Historically individuals have not been seen as entities in international law, as

3120-433: A number of more exotic explosive materials, and exotic methods of causing explosions. Examples include nuclear explosives , and abruptly heating a substance to a plasma state with a high-intensity laser or electric arc . Laser- and arc-heating are used in laser detonators, exploding-bridgewire detonators , and exploding foil initiators , where a shock wave and then detonation in conventional chemical explosive material

3315-749: A number of treaties focused on environmental protection were ratified, including the Declaration of the United Nations Conference on the Human Environment of 1972, the World Charter for Nature of 1982, and the Vienna Convention for the Protection of the Ozone Layer of 1985. States generally agreed to co-operate with each other in relation to environmental law, as codified by principle 24 of

3510-433: A particular legal circumstance. Historically the comity theory has been used although the definition is unclear, sometimes referring to reciprocity and sometimes being used as a synonym for private international law. Story distinguished it from "any absolute paramount obligation, superseding all discretion on the subject". There are three aspects to conflict of laws – determining which domestic court has jurisdiction over

3705-487: A physical shock signal. In other situations, different signals such as electrical or physical shock, or, in the case of laser detonation systems, light, are used to initiate an action, i.e., an explosion. A small quantity, usually milligrams, is sufficient to initiate a larger charge of explosive that is usually safer to handle. International law International law differs from state-based domestic legal systems in that it operates largely through consent , since there

3900-685: A practical measure, primary explosives are sufficiently sensitive that they can be reliably initiated with a blow from a hammer; however, PETN can also usually be initiated in this manner, so this is only a very broad guideline. Additionally, several compounds, such as nitrogen triiodide , are so sensitive that they cannot even be handled without detonating. Nitrogen triiodide is so sensitive that it can be reliably detonated by exposure to alpha radiation . Primary explosives are often used in detonators or to trigger larger charges of less sensitive secondary explosives . Primary explosives are commonly used in blasting caps and percussion caps to translate

4095-460: A psychological weapon and as a method to sink enemy ships. Contact mines need to be touched by the target before they detonate, limiting the damage to the direct effects of the explosion and usually affecting only the vessel that triggers them. Explosive An explosive (or explosive material ) is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by

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4290-602: A range of entities, including the Church , mercantile city-states, and kingdoms, most of which had overlapping and ever-changing jurisdictions. As in China and India, these divisions prompted the development of rules aimed at providing stable and predictable relations. Early examples include canon law , which governed ecclesiastical institutions and clergy throughout Europe; the lex mercatoria ("merchant law"), which concerned trade and commerce; and various codes of maritime law , such as

4485-399: A reaction to be classified as a detonation as opposed to just a deflagration, the propagation of the reaction shockwave through the material being tested must be faster than the speed of sound through that material. The speed of sound through a liquid or solid material is usually orders of magnitude faster than the speed of sound through air or other gases. Traditional explosives mechanics

4680-684: A safe distance. The submarine H. L. Hunley used one to sink USS  Housatonic on 17 February 1864. A Harvey torpedo was a type of floating mine towed alongside a ship and was briefly in service in the Royal Navy in the 1870s. Other "torpedoes" were attached to ships or propelled themselves. One such weapon called the Whitehead torpedo after its inventor, caused the word "torpedo" to apply to self-propelled underwater missiles as well as to static devices. These mobile devices were also known as "fish torpedoes". The American Civil War of 1861–1865 also saw

4875-566: A shipping route can stop maritime movements for days while the entire area is swept. A mine's capability to sink ships makes it a credible threat, but minefields work more on the mind than on ships. International law , specifically the Eighth Hague Convention of 1907 , requires nations to declare when they mine an area, to make it easier for civil shipping to avoid the mines. The warnings do not have to be specific; for example, during World War II, Britain declared simply that it had mined

5070-693: A sloop mined by the Peruvians. A similar fate occurred with the gunboat schooner Covadonga in front of the port of Chancay , on 13 September 1880, which having captured and checked a beautiful boat, it exploded when hoisting it on its side. During the Battle of Tamsui (1884), in the Keelung Campaign of the Sino-French War , Chinese forces in Taiwan under Liu Mingchuan took measures to reinforce Tamsui against

5265-735: A smaller number are manufactured specifically for the purpose of being used as explosives. The remainder are too dangerous, sensitive, toxic, expensive, unstable, or prone to decomposition or degradation over short time spans. In contrast, some materials are merely combustible or flammable if they burn without exploding. The distinction, however, is not very clear. Certain materials—dusts, powders, gases, or volatile organic liquids—may be simply combustible or flammable under ordinary conditions, but become explosive in specific situations or forms, such as dispersed airborne clouds , or confinement or sudden release . Early thermal weapons , such as Greek fire , have existed since ancient times. At its roots,

5460-613: A special status. The rules in a treaty can only be considered national law if the contents of the treaty have been enacted first. An example is the United Kingdom; after the country ratified the European Convention on Human Rights , the convention was only considered to have the force of law in national law after Parliament passed the Human Rights Act 1998 . In practice, the division of countries between monism and dualism

5655-435: A starting point but does not recognise that organisations can have no separate personality but nevertheless function as an international organisation. The UN Economic and Social Council has emphasised a split between inter-government organisations (IGOs), which are created by inter-governmental agreements, and international non-governmental organisations (INGOs). All international organisations have members; generally this

5850-546: A state and res communis which is territory that cannot be acquired by a state. There have historically been five methods of acquiring territorial sovereignty , reflecting Roman property law: occupation, accretion, cession , conquest and prescription . The law of the sea is the area of international law concerning the principles and rules by which states and other entities interact in maritime matters. It encompasses areas and issues such as navigational rights, sea mineral rights, and coastal waters jurisdiction. The law of

6045-400: A state and, separately, it may recognise that nation's government as being legitimate and capable of representing the state on the international stage. There are two theories on recognition; the declaratory theory sees recognition as commenting on a current state of law which has been separately satisfied whereas the constitutive theory states that recognition by other states determines whether

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6240-431: A state can be considered to have legal personality. States can be recognised explicitly through a released statement or tacitly through conducting official relations, although some countries have formally interacted without conferring recognition. Throughout the 19th century and the majority of the 20th century, states were protected by absolute immunity, so they could not face criminal prosecution for any actions. However

6435-618: A thermodynamically favorable process in addition to one that propagates very rapidly. Thus, explosives are substances that contain a large amount of energy stored in chemical bonds . The energetic stability of the gaseous products and hence their generation comes from the formation of strongly bonded species like carbon monoxide, carbon dioxide, and nitrogen gas, which contain strong double and triple bonds having bond strengths of nearly 1 MJ/mole. Consequently, most commercial explosives are organic compounds containing –NO 2 , –ONO 2 and –NHNO 2 groups that, when detonated, release gases like

6630-604: A time when the Chilean squadron was blockading the Peruvian ports, formed a brigade of torpedo boats under the command of the frigate captain Leopoldo Sánchez Calderón and the Peruvian engineer Manuel Cuadros , who perfected the naval torpedo or mine system to be electrically activated when the cargo weight was lifted. This is how, on 3 July 1880, in front of the port of Callao , the gunned transport Loa flies when capturing

6825-414: A treaty "shall be interpreted in good faith in accordance with the ordinary meaning to be given to the terms of the treaty in their context and in the light of its object and purpose". This represents a compromise between three theories of interpretation: the textual approach which looks to the ordinary meaning of the text, the subjective approach which considers factors such as the drafters' intention, and

7020-499: A variable number of ships to pass unharmed before detonating. This made them a great deal harder to sweep. Mining campaigns could have devastating consequences. The U.S. effort against Japan, for instance, closed major ports, such as Hiroshima , for days, and by the end of the Pacific War had cut the amount of freight passing through Kobe – Yokohama by 90%. When the war ended, more than 25,000 U.S.-laid mines were still in place, and

7215-492: A way, as to be evidence of a belief that this practice is rendered obligatory by the existence of a rule of law requiring it". A committee of the International Law Association has argued that there is a general presumption of an opinio juris where state practice is proven but it may be necessary if the practice suggests that the states did not believe it was creating a precedent. The test in these circumstances

7410-709: Is mining . Whether the mine is on the surface or is buried underground, the detonation or deflagration of either a high or low explosive in a confined space can be used to liberate a fairly specific sub-volume of a brittle material (rock) in a much larger volume of the same or similar material. The mining industry tends to use nitrate-based explosives such as emulsions of fuel oil and ammonium nitrate solutions, mixtures of ammonium nitrate prills (fertilizer pellets) and fuel oil ( ANFO ) and gelatinous suspensions or slurries of ammonium nitrate and combustible fuels. In materials science and engineering, explosives are used in cladding ( explosion welding ). A thin plate of some material

7605-427: Is a pure substance ( molecule ) that in a chemical reaction can contribute some atoms of one or more oxidizing elements, in which the fuel component of the explosive burns. On the simplest level, the oxidizer may itself be an oxidizing element , such as gaseous or liquid oxygen . The availability and cost of explosives are determined by the availability of the raw materials and the cost, complexity, and safety of

7800-461: Is also able to issue a conditional declaration stating that it will consent to a given treaty only on the condition of a particular provision or interpretation. Article 54 of the VCLT provides that either party may terminate or withdraw from a treaty in accordance with its terms or at any time with the consent of the other party, with 'termination' applying to a bilateral treaty and 'withdrawal' applying to

7995-402: Is an important consideration in selecting an explosive for a particular purpose. The explosive in an armor-piercing projectile must be relatively insensitive, or the shock of impact would cause it to detonate before it penetrated to the point desired. The explosive lenses around nuclear charges are also designed to be highly insensitive, to minimize the risk of accidental detonation. The index of

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8190-440: Is an important element influencing the yield of the energy transmitted for both atmospheric over-pressure and ground acceleration. By definition, a "low explosive", such as black powder, or smokeless gunpowder has a burn rate of 171–631 m/s. In contrast, a "high explosive", whether a primary, such as detonating cord , or a secondary, such as TNT or C-4, has a significantly higher burn rate about 6900–8092 m/s. Stability

8385-520: Is based on the shock-sensitive rapid oxidation of carbon and hydrogen to carbon dioxide, carbon monoxide and water in the form of steam. Nitrates typically provide the required oxygen to burn the carbon and hydrogen fuel. High explosives tend to have the oxygen, carbon and hydrogen contained in one organic molecule, and less sensitive explosives like ANFO are combinations of fuel (carbon and hydrogen fuel oil) and ammonium nitrate . A sensitizer such as powdered aluminum may be added to an explosive to increase

8580-584: Is claiming rights under refugee law but as, argued by the political theorist Hannah Arendt , human rights are often tied to someone's nationality. The European Court of Human Rights allows individuals to petition the court where their rights have been violated and national courts have not intervened and the Inter-American Court of Human Rights and the African Court on Human and Peoples' Rights have similar powers. Traditionally, sovereign states and

8775-452: Is considered the seminal event in international law. The resulting Westphalian sovereignty is said to have established the current international legal order characterised by independent nation states , which have equal sovereignty regardless of their size and power, defined primarily by non-interference in the domestic affairs of sovereign states, although historians have challenged this narrative. The idea of nationalism further solidified

8970-443: Is created by laser- or electric-arc heating. Laser and electric energy are not currently used in practice to generate most of the required energy, but only to initiate reactions. To determine the suitability of an explosive substance for a particular use, its physical properties must first be known. The usefulness of an explosive can only be appreciated when the properties and the factors affecting them are fully understood. Some of

9165-613: Is defined under Article 1 of the Montevideo Convention on the Rights and Duties of States as a legal person with a permanent population, a defined territory, government and capacity to enter relations with other states. There is no requirement on population size, allowing micro-states such as San Marino and Monaco to be admitted to the UN, and no requirement of fully defined boundaries, allowing Israel to be admitted despite border disputes . There

9360-448: Is evaluated by a tailored series of tests to assess the material for its intended use. Of the tests listed below, cylinder expansion and air-blast tests are common to most testing programs, and the others support specific applications. In addition to strength, explosives display a second characteristic, which is their shattering effect or brisance (from the French meaning to "break"). Brisance

9555-468: Is important in determining the effectiveness of an explosion in fragmenting shells, bomb casings, and grenades . The rapidity with which an explosive reaches its peak pressure ( power ) is a measure of its brisance. Brisance values are primarily employed in France and Russia. The sand crush test is commonly employed to determine the relative brisance in comparison to TNT. No test is capable of directly comparing

9750-680: Is just one example of a ship that was struck by a magnetic mine during this time. On 21 November 1939, a mine broke her keel, which damaged her engine and boiler rooms, as well as injuring 46 men, one later died from his injuries. She was towed to Rosyth for repairs. Incidents like this resulted in many of the boats that sailed to Dunkirk being degaussed in a marathon four-day effort by degaussing stations. The Allies and Germany deployed acoustic mines in World War II, against which even wooden- hulled ships (in particular minesweepers ) remained vulnerable. Japan developed sonic generators to sweep these;

9945-407: Is no academic consensus about what is included within this scope. They are considered to be derived from both national and international legal systems, although including the latter category has led to debate about potential cross-over with international customary law. The relationship of general principles to treaties or custom has generally been considered to be "fill[ing] the gaps" although there

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10140-803: Is no universally accepted authority to enforce it upon sovereign states . States and non-state actors may choose to not abide by international law, and even to breach a treaty but such violations, particularly of peremptory norms , can be met with disapproval by others and in some cases coercive action ranging from diplomatic and economic sanctions to war. The sources of international law include international custom (general state practice accepted as law), treaties , and general principles of law recognised by most national legal systems. Although international law may also be reflected in international comity —the practices adopted by states to maintain good relations and mutual recognition—such traditions are not legally binding . The relationship and interaction between

10335-591: Is often more complicated; countries following both approaches may accept peremptory norms as being automatically binding and they may approach treaties, particularly later amendments or clarifications, differently than they would approach customary law. Many countries with older or unwritten constitutions do not have explicit provision for international law in their domestic system and there has been an upswing in support for monism principles in relation to human rights and humanitarian law, as most principles governing these concepts can be found in international law. A state

10530-400: Is placed atop a thick layer of a different material, both layers typically of metal. Atop the thin layer is placed an explosive. At one end of the layer of explosive, the explosion is initiated. The two metallic layers are forced together at high speed and with great force. The explosion spreads from the initiation site throughout the explosive. Ideally, this produces a metallurgical bond between

10725-615: Is restricted to states, although it can include other international organisations. Sometimes non-members will be allowed to participate in meetings as observers. The Yearbook of International Organizations sets out a list of international organisations, which include the UN, the WTO, the World Bank and the IMF. Generally organisations consist of a plenary organ, where member states can be represented and heard; an executive organ, to decide matters within

10920-531: Is still no conclusion about their exact relationship in the absence of a hierarchy. A treaty is defined in Article 2 of the Vienna Convention on the Law of Treaties (VCLT) as "an international agreement concluded between States in written form and governed by international law, whether embodied in a single instrument or in two or more related instruments and whatever its particular designation". The definition specifies that

11115-471: Is the territorial principle , which states that a nation has jurisdiction over actions which occur within its territorial boundaries. The second is the nationality principle , also known as the active personality principle, whereby a nation has jurisdiction over actions committed by its nationals regardless of where they occur. The third is the passive personality principle, which gives a country jurisdiction over any actions which harm its nationals. The fourth

11310-473: Is the ability of an explosive to be stored without deterioration . The following factors affect the stability of an explosive: The term power or performance as applied to an explosive refers to its ability to do work. In practice it is defined as the explosive's ability to accomplish what is intended in the way of energy delivery (i.e., fragment projection, air blast, high-velocity jet, underwater shock and bubble energy, etc.). Explosive power or performance

11505-578: Is the authority of a legislature to enact legislation on a particular issue, and adjudicative jurisdiction, which is the authority of a court to hear a particular case. This aspect of private international law should first be resolved by reference to domestic law, which may incorporate international treaties or other supranational legal concepts, although there are consistent international norms. There are five forms of jurisdiction which are consistently recognised in international law; an individual or act can be subject to multiple forms of jurisdiction. The first

11700-411: Is the lead-free primary explosive copper(I) 5-nitrotetrazolate, an alternative to lead azide . Explosive material may be incorporated in the explosive train of a device or system. An example is a pyrotechnic lead igniting a booster, which causes the main charge to detonate. The most widely used explosives are condensed liquids or solids converted to gaseous products by explosive chemical reactions and

11895-444: Is the national law of the court making the determination. Some examples are lex domicilii , the law of the domicile, and les patriae , the law of the nationality. The rules which are applied to conflict of laws will vary depending on the national system determining the question. There have been attempts to codify an international standard to unify the rules so differences in national law cannot lead to inconsistencies, such as through

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12090-460: Is the practice of the removal of explosive naval mines, usually by a specially designed ship called a minesweeper using various measures to either capture or detonate the mines, but sometimes also with an aircraft made for that purpose. There are also mines that release a homing torpedo rather than explode themselves. Mines can be laid in many ways: by purpose-built minelayers , refitted ships, submarines, or aircraft —and even by dropping them into

12285-467: Is the protective principle, where a nation has jurisdiction in relation to threats to its "fundamental national interests". The final form is universal jurisdiction , where a country has jurisdiction over certain acts based on the nature of the crime itself. Following World War II, the modern system for international human rights was developed to make states responsible for their human rights violations. The UN Economic and Security Council established

12480-407: Is used to describe an explosive phenomenon whereby the decomposition is propagated by a shock wave traversing the explosive material at speeds greater than the speed of sound within the substance. The shock front is capable of passing through the high explosive material at supersonic speeds   —   typically thousands of metres per second. In addition to chemical explosives, there are

12675-428: Is whether opinio juris can be proven by the states' failure to protest. Other academics believe that intention to create customary law can be shown by states including the principle in multiple bilateral and multilateral treaties, so that treaty law is necessary to form customs. The adoption of the VCLT in 1969 established the concept of jus cogens , or peremptory norms, which are "a norm accepted and recognized by

12870-496: Is widely regarded as the father of international law, being one of the first scholars to articulate an international order that consists of a "society of states" governed not by force or warfare but by actual laws, mutual agreements, and customs. Grotius secularised international law; his 1625 work, De Jure Belli ac Pacis , laid down a system of principles of natural law that bind all nations regardless of local custom or law. He inspired two nascent schools of international law,

13065-528: The Petropavlovsk struck them near Port Arthur , sending the holed vessel to the bottom and killing the fleet commander, Admiral Stepan Makarov , and most of his crew in the process. The toll inflicted by mines was not confined to the Russians, however. The Japanese Navy lost two battleships, four cruisers, two destroyers and a torpedo-boat to offensively laid mines during the war. Most famously, on 15 May 1904,

13260-531: The "Uniting for Peace" resolution of 3 November 1950, which allowed the organ to pass recommendations to authorize the use of force. This resolution also led to the practice of UN peacekeeping , which has been notably been used in East Timor and Kosovo . There are more than one hundred international courts in the global community, although states have generally been reluctant to allow their sovereignty to be limited in this way. The first known international court

13455-756: The EFTA Court and the Court of Justice of the Andean Community . Interstate arbitration can also be used to resolve disputes between states, leading in 1899 to the creation of the Permanent Court of Arbitration which facilitates the process by maintaining a list of arbitrators. This process was used in the Island of Palmas case and to resolve disputes during the Eritrean-Ethiopian war . The ICJ operates as one of

13650-522: The Gulf of Finland during the Crimean War of 1853–1856. The mining of Vulcan led to the world's first minesweeping operation. During the next 72 hours, 33 mines were swept. The Jacobi mine was designed by German-born, Russian engineer Jacobi, in 1853. The mine was tied to the sea bottom by an anchor. A cable connected it to a galvanic cell which powered it from the shore, the power of its explosive charge

13845-467: The Hague and Geneva Conventions , the first of which was passed in 1864. Colonial expansion by European powers reached its peak in the late 19th century and its influence began to wane following the unprecedented bloodshed of World War I , which spurred the creation of international organisations. Right of conquest was generally recognized as international law before World War II . The League of Nations

14040-604: The Hague Convention on the Recognition and Enforcement of Foreign Judgments in Civil and Commercial Matters and the Brussels Regulations . These treaties codified practice on the enforcement of international judgments, stating that a foreign judgment would be automatically recognised and enforceable where required in the jurisdiction where the party resides, unless the judgement was contrary to public order or conflicted with

14235-459: The Hobbesian notion that the state of nature was one of war and conflict, arguing that the natural state of the world is actually peaceful but weak and uncertain without adherence to the law of nations. The actions of a state consist of nothing more than the sum of the individuals within that state, thereby requiring the state to apply a fundamental law of reason, which is the basis of natural law. He

14430-700: The Holy See were the sole subjects of international law. With the proliferation of international organisations over the last century, they have also been recognised as relevant parties. One definition of international organisations comes from the ILC's 2011 Draft Articles on the Responsibility of International Organizations which in Article 2(a) states that it is "an organization established by treaty or other instrument governed by international law and possessing its own international legal personality". This definition functions as

14625-461: The Indian subcontinent was divided into various states, which over time developed rules of neutrality, treaty law , and international conduct, and established both temporary and permanent embassies . Following the collapse of the western Roman Empire in the fifth century CE, Europe fragmented into numerous often-warring states for much of the next five centuries. Political power was dispersed across

14820-663: The International Bank for Reconstruction and Development (World Bank) to the World Health Organization furthered the development of a multilateralist approach as states chose to compromise on sovereignty to benefit from international cooperation. Since the 1980s, there has been an increasing focus on the phenomenon of globalisation and on protecting human rights on the global scale, particularly when minorities or indigenous communities are involved, as concerns are raised that globalisation may be increasing inequality in

15015-712: The International Covenant on Economic, Social and Cultural Rights (ICESCR). These two documents along with the UDHR are considered the International Bill of Human Rights . Non-domestic human rights enforcement operates at both the international and regional levels. Established in 1993, the Office of the UN High Commissioner for Human Rights supervises Charter-based and treaty-based procedures. The former are based on

15210-583: The Korean War , mines laid by North Korean forces caused 70% of the casualties suffered by U.S. naval vessels and caused 4 sinkings. During the Iran–Iraq War from 1980 to 1988, the belligerents mined several areas of the Persian Gulf and nearby waters. On 24 July 1987, the supertanker SS Bridgeton was mined by Iran near Farsi Island. On 14 April 1988, USS  Samuel B. Roberts struck an Iranian mine in

15405-693: The Reagan administration , the CIA mined Nicaragua 's Sandino port in 1984 in support of the Contras . A Soviet tanker was among the ships damaged by these mines. In 1986, in the case of Nicaragua v. United States , the International Court of Justice ruled that this mining was a violation of international law. During the Gulf War , Iraqi naval mines severely damaged USS  Princeton and USS  Tripoli . When

15600-584: The Rio Declaration of 1972. Despite these, and other, multilateral environmental agreements covering specific issues, there is no overarching policy on international environmental protection or one specific international organisation, with the exception of the UN Environmental Programme . Instead, a general treaty setting out the framework for tackling an issue has then been supplemented by more specific protocols. Climate change has been one of

15795-637: The Rolls of Oléron — aimed at regulating shipping in North-western Europe — and the later Laws of Wisby , enacted among the commercial Hanseatic League of northern Europe and the Baltic region . In the Islamic world , Muhammad al-Shaybani published Al-Siyar Al-Kabīr in the eighth century, which served as a fundamental reference work for siyar , a subset of Sharia law , which governed foreign relations. This

15990-550: The UN Commission on Human Rights in 1946, which developed the Universal Declaration of Human Rights (UDHR), which established non-binding international human rights standards, for work, standards of living, housing and education, non-discrimination, a fair trial and prohibition of torture. Two further human rights treaties were adopted by the UN in 1966, the International Covenant on Civil and Political Rights (ICCPR) and

16185-458: The "law of nations", which unlike its eponymous Roman predecessor, applied natural law to relations between states. In Islam, a similar framework was developed wherein the law of nations was derived, in part, from the principles and rules set forth in treaties with non-Muslims. The 15th century witnessed a confluence of factors that contributed to an accelerated development of international law. Italian jurist Bartolus de Saxoferrato (1313–1357)

16380-469: The British. In 1855, 301 more Jacobi mines were laid around Krostadt and Lisy Nos . British ships did not dare to approach them. In the 19th century, mines were called torpedoes , a name probably conferred by Robert Fulton after the torpedo fish , which gives powerful electric shocks . A spar torpedo was a mine attached to a long pole and detonated when the ship carrying it rammed another one and withdrew

16575-539: The English Channel, North Sea and French coast. Naval mines were first invented by Chinese innovators of Imperial China and were described in thorough detail by the early Ming dynasty artillery officer Jiao Yu , in his 14th-century military treatise known as the Huolongjing . Chinese records tell of naval explosives in the 16th century, used to fight against Japanese pirates ( wokou ). This kind of naval mine

16770-621: The French; they planted nine torpedo mines in the river and blocked the entrance. During the Boxer Rebellion , Imperial Chinese forces deployed a command-detonated mine field at the mouth of the Hai River before the Dagu forts , to prevent the western Allied forces from sending ships to attack. The next major use of mines was during the Russo-Japanese War of 1904–1905. Two mines blew up when

16965-724: The Greek concept of natural law , the Romans conceived of jus gentium as being universal. However, in contrast to modern international law, the Roman law of nations applied to relations with and between foreign individuals rather than among political units such as states. Beginning with the Spring and Autumn period of the eighth century BCE, China was divided into numerous states that were often at war with each other. Rules for diplomacy and treaty-making emerged, including notions regarding just grounds for war ,

17160-463: The ICJ has set a high bar for enforcement in the cases of Anglo-Norwegian Fisheries and North Sea Continental Shelf . There has been legal debate on this topic with the only prominent view on the length of time necessary to establish custom explained by Humphrey Waldock as varying "according to the nature of the case". The practice is not required to be followed universally by states, but there must be

17355-651: The Navy proved unable to sweep them all, limiting efforts to critical areas. After sweeping for almost a year, in May 1946, the Navy abandoned the effort with 13,000 mines still unswept. Over the next thirty years, more than 500 minesweepers (of a variety of types) were damaged or sunk clearing them. The U.S. began adding delay counters to their magnetic mines in June 1945. Since World War II , mines have damaged 14 United States Navy ships, whereas air and missile attacks have damaged four. During

17550-533: The North Sea, the British East Coast, Straits of Dover, and Heligoland Bight is estimated at 190,000 and the total number during the whole of WWI was 235,000 sea mines. Clearing the barrage after the war took 82 ships and five months, working around the clock. It was also during World War I, that the British hospital ship , HMHS  Britannic , became the largest vessel ever sunk by a naval mine. The Britannic

17745-692: The Russian minelayer Amur planted a 50-mine minefield off Port Arthur and succeeded in sinking the Japanese battleships Hatsuse and Yashima . Following the end of the Russo-Japanese War, several nations attempted to have mines banned as weapons of war at the Hague Peace Conference (1907) . Many early mines were fragile and dangerous to handle, as they contained glass containers filled with nitroglycerin or mechanical devices that activated

17940-467: The U.S. coast. Initially, contact mines (requiring a ship to physically strike a mine to detonate it) were employed, usually tethered at the end of a cable just below the surface of the water. Contact mines usually blew a hole in ships' hulls. By the beginning of World War II, most nations had developed mines that could be dropped from aircraft, some of which floated on the surface, making it possible to lay them in enemy harbours. The use of dredging and nets

18135-554: The UDHR was drafted, although many countries in the Global South have led the development of human rights on the global stage in the intervening decades. International labour law is generally defined as "the substantive rules of law established at the international level and the procedural rules relating to their adoption and implementation". It operates primarily through the International Labor Organization (ILO),

18330-577: The UN Charter and operate under the UN Human Rights Council , where each global region is represented by elected member states. The Council is responsible for Universal Periodic Review , which requires each UN member state to review its human rights compliance every four years, and for special procedures, including the appointment of special rapporteurs , independent experts and working groups. The treaty-based procedure allows individuals to rely on

18525-444: The UN Charter or international treaties, although in practice there are no relevant matters in the UN Charter. The ICJ may also be asked by an international organisation to provide an advisory opinion on a legal question, which are generally considered non-binding but authoritative. Conflict of laws , also known as private international law, was originally concerned with choice of law , determining which nation's laws should govern

18720-413: The aforementioned (e.g., nitroglycerin , TNT , HMX , PETN , nitrocellulose ). An explosive is classified as a low or high explosive according to its rate of combustion : low explosives burn rapidly (or deflagrate ), while high explosives detonate . While these definitions are distinct, the problem of precisely measuring rapid decomposition makes practical classification of explosives difficult. For

18915-472: The capacity of an explosive to be initiated into detonation in a sustained manner. It is defined by the power of the detonator which is certain to prime the explosive to a sustained and continuous detonation. Reference is made to the Sellier-Bellot scale that consists of a series of 10 detonators, from n. 1 to n. 10 , each of which corresponds to an increasing charge weight. In practice, most of

19110-510: The central Persian Gulf shipping lane , wounding 10 sailors. In the summer of 1984, magnetic sea mines damaged at least 19 ships in the Red Sea . The U.S. concluded Libya was probably responsible for the minelaying. In response the U.S., Britain, France, and three other nations launched Operation Intense Look , a minesweeping operation in the Red Sea involving more than 46 ships. On the orders of

19305-486: The chemical reaction moves faster through the material than the speed of sound ) are said to be "high explosives" and materials that deflagrate are said to be "low explosives". Explosives may also be categorized by their sensitivity . Sensitive materials that can be initiated by a relatively small amount of heat or pressure are primary explosives and materials that are relatively insensitive are secondary or tertiary explosives . A wide variety of chemicals can explode;

19500-612: The choice as to whether or not to ratify and implement these standards. The secretariat of the ILO is the International Labour Office, which can be consulted by states to determine the meaning of a convention, which forms the ILO's case law. Although the Right to Organise Convention does not provide an explicit right to strike, this has been interpreted into the treaty through case law. The UN does not specifically focus on international labour law, although some of its treaties cover

19695-425: The choice being determined by the characteristics of the explosive. Dependent upon the method employed, an average density of the loaded charge can be obtained that is within 80–99% of the theoretical maximum density of the explosive. High load density can reduce sensitivity by making the mass more resistant to internal friction . However, if density is increased to the extent that individual crystals are crushed,

19890-674: The coasts of these countries. London P&I Club issued a warning to freight ships in the area, advising them to "maintain lookouts for mines and pay careful attention to local navigation warnings". Ukrainian forces have mined "from the Sea of Azov to the Black Sea which banks the critical city of Odesa." Naval mines may be classified into three major groups; contact, remote and influence mines. The earliest mines were usually of this type. They are still used today, as they are extremely low cost compared to any other anti-ship weapon and are effective, both as

20085-457: The common consent of these states" and this definition has been largely adopted by international legal scholars. There is a distinction between public and private international law ; the latter is concerned with whether national courts can claim jurisdiction over cases with a foreign element and the application of foreign judgments in domestic law, whereas public international law covers rules with an international origin. The difference between

20280-598: The competence of the organisation; and an administrative organ, to execute the decisions of the other organs and handle secretarial duties. International organisations will typically provide for their privileges and immunity in relation to its member states in their constitutional documents or in multilateral agreements, such as the Convention on the Privileges and Immunities of the United Nations . These organisations also have

20475-452: The concept and formation of nation-states. Elements of the naturalist and positivist schools were synthesised, notably by German philosopher Christian Wolff (1679–1754) and Swiss jurist Emer de Vattel (1714–1767), both of whom sought a middle-ground approach. During the 18th century, the positivist tradition gained broader acceptance, although the concept of natural rights remained influential in international politics, particularly through

20670-518: The conduct of warfare during the American Civil War , and is noted for codifying rules and articles of war adhered to by nations across the world, including the United Kingdom, Prussia, Serbia and Argentina. In the years that followed, numerous other treaties and bodies were created to regulate the conduct of states towards one another, including the Permanent Court of Arbitration in 1899, and

20865-633: The decade following 1868, Major Henry Larcom Abbot carried out a lengthy set of experiments to design and test moored mines that could be exploded on contact or be detonated at will as enemy shipping passed near them. This initial development of mines in the United States took place under the purview of the U.S. Army Corps of Engineers , which trained officers and men in their use at the Engineer School of Application at Willets Point, New York (later named Fort Totten ). In 1901 underwater minefields became

21060-481: The determination of rules of law". It was originally considered that the arrangement of the sources sequentially would suggest an implicit hierarchy of sources; however, the statute does not provide for a hierarchy and other academics have argued that therefore the sources must be equivalent. General principles of law have been defined in the Statute as "general principles of law recognized by civilized nations" but there

21255-421: The development of pressure within rounds of ammunition and separation of mixtures into their constituents. Volatility affects the chemical composition of the explosive such that a marked reduction in stability may occur, which results in an increase in the danger of handling. The introduction of water into an explosive is highly undesirable since it reduces the sensitivity, strength, and velocity of detonation of

21450-588: The disadvantage of "sweeping" only a small strip. A better solution was found in the "Double-L Sweep" using electrical cables dragged behind ships that passed large pulses of current through the seawater. This created a large magnetic field and swept the entire area between the two ships. The older methods continued to be used in smaller areas. The Suez Canal continued to be swept by aircraft, for instance. While these methods were useful for clearing mines from local ports, they were of little or no use for enemy-controlled areas. These were typically visited by warships, and

21645-408: The efficiency of the procedures themselves. Legal territory can be divided into four categories. There is territorial sovereignty which covers land and territorial sea, including the airspace above it and the subsoil below it, territory outside the sovereignty of any state, res nullius which is not yet within territorial sovereignty but is territory that is legally capable of being acquired by

21840-498: The energy of the detonation. Once detonated, the nitrogen portion of the explosive formulation emerges as nitrogen gas and toxic nitric oxides . The chemical decomposition of an explosive may take years, days, hours, or a fraction of a second. The slower processes of decomposition take place in storage and are of interest only from a stability standpoint. Of more interest are the other two rapid forms besides decomposition: deflagration and detonation. In deflagration, decomposition of

22035-604: The energy released by those reactions. The gaseous products of complete reaction are typically carbon dioxide , steam , and nitrogen . Gaseous volumes computed by the ideal gas law tend to be too large at high pressures characteristic of explosions. Ultimate volume expansion may be estimated at three orders of magnitude, or one liter per gram of explosive. Explosives with an oxygen deficit will generate soot or gases like carbon monoxide and hydrogen , which may react with surrounding materials such as atmospheric oxygen . Attempts to obtain more precise volume estimates must consider

22230-436: The exception of states who have been persistent objectors during the process of the custom being formed and special or local forms of customary law. The requirement for state practice relates to the practice, either through action or failure to act, of states in relation to other states or international organisations. There is no legal requirement for state practice to be uniform or for the practice to be long-running, although

22425-521: The explosion. Ships that had successfully run the gantlet of the Atlantic crossing were sometimes destroyed entering freshly cleared British harbours. More shipping was being lost than could be replaced, and Churchill ordered the intact recovery of one of these new mines to be of the highest priority. The British experienced a stroke of luck in November 1939, when a German mine was dropped from an aircraft onto

22620-445: The explosive material is propagated by a flame front which moves relatively slowly through the explosive material, i.e. at speeds less than the speed of sound within the substance (which is usually still higher than 340 m/s or 1,220 km/h in most liquid or solid materials) in contrast to detonation, which occurs at speeds greater than the speed of sound. Deflagration is a characteristic of low explosive material. This term

22815-651: The explosive material, but a practical explosive will often include small percentages of other substances. For example, dynamite is a mixture of highly sensitive nitroglycerin with sawdust , powdered silica , or most commonly diatomaceous earth , which act as stabilizers. Plastics and polymers may be added to bind powders of explosive compounds; waxes may be incorporated to make them safer to handle; aluminium powder may be introduced to increase total energy and blast effects. Explosive compounds are also often "alloyed": HMX or RDX powders may be mixed (typically by melt-casting) with TNT to form Octol or Cyclotol . An oxidizer

23010-442: The explosive may become more sensitive. Increased load density also permits the use of more explosive, thereby increasing the power of the warhead . It is possible to compress an explosive beyond a point of sensitivity, known also as dead-pressing , in which the material is no longer capable of being reliably initiated, if at all. Volatility is the readiness with which a substance vaporizes . Excessive volatility often results in

23205-414: The explosive properties of two or more compounds; it is important to examine the data from several such tests (sand crush, trauzl , and so forth) in order to gauge relative brisance. True values for comparison require field experiments. Density of loading refers to the mass of an explosive per unit volume. Several methods of loading are available, including pellet loading, cast loading, and press loading,

23400-409: The explosive. Hygroscopicity is a measure of a material's moisture-absorbing tendencies. Moisture affects explosives adversely by acting as an inert material that absorbs heat when vaporized, and by acting as a solvent medium that can cause undesired chemical reactions. Sensitivity, strength, and velocity of detonation are reduced by inert materials that reduce the continuity of the explosive mass. When

23595-429: The explosives on the market today are sensitive to an n. 8 detonator, where the charge corresponds to 2 grams of mercury fulminate . The velocity with which the reaction process propagates in the mass of the explosive. Most commercial mining explosives have detonation velocities ranging from 1,800 m/s to 8,000 m/s. Today, velocity of detonation can be measured with accuracy. Together with density it

23790-554: The failed "floating petard". Weapons of this type were apparently tried by the English at the Siege of La Rochelle in 1627. American David Bushnell developed the first American naval mine, for use against the British in the American War of Independence . It was a watertight keg filled with gunpowder that was floated toward the enemy, detonated by a sparking mechanism if it struck a ship. It

23985-413: The first time in warfare. The Chinese would incorporate explosives fired from bamboo or bronze tubes known as bamboo firecrackers. The Chinese also inserted live rats inside the bamboo firecrackers; when fired toward the enemy, the flaming rats created great psychological ramifications—scaring enemy soldiers away and causing cavalry units to go wild. The first useful explosive stronger than black powder

24180-501: The first to be so fitted were the carrier HMS  Ark Royal and the liners RMS  Queen Mary and RMS  Queen Elizabeth . It was a photo of one of these liners in New York harbour, showing the degaussing coil, which revealed to German Naval Intelligence the fact that the British were using degaussing methods to combat their magnetic mines. This was felt to be impractical for smaller warships and merchant vessels, mainly because

24375-502: The focus was on the relationship between states. As human rights have become more important on the global stage, being codified by the UN General Assembly (UNGA) in the Universal Declaration of Human Rights in 1948, individuals have been given the power to defend their rights to judicial bodies. International law is largely silent on the issue of nationality law with the exception of cases of dual nationality or where someone

24570-536: The force were several fireships , carrying 40 barrels of gunpowder and rigged to explode by a clockwork mechanism. In 1812, Russian engineer Pavel Shilling exploded an underwater mine using an electrical circuit . In 1842 Samuel Colt used an electric detonator to destroy a moving vessel to demonstrate an underwater mine of his own design to the United States Navy and President John Tyler . However, opposition from former president John Quincy Adams , scuttled

24765-532: The fuze of the naval mine. Although this is the rotating steel wheel's first use in naval mines, Jiao Yu described their use for land mines in the 14th century. The first plan for a sea mine in the West was by Ralph Rabbards, who presented his design to Queen Elizabeth I of England in 1574. The Dutch inventor Cornelius Drebbel was employed in the Office of Ordnance by King Charles I of England to make weapons, including

24960-473: The gear was not ready by war's end. The primary method Japan used was small air-delivered bombs. This was profligate and ineffectual; used against acoustic mines at Penang , 200 bombs were needed to detonate just 13 mines. The Germans developed a pressure-activated mine and planned to deploy it as well, but they saved it for later use when it became clear the British had defeated the magnetic system. The U.S. also deployed these, adding "counters" which would allow

25155-718: The globe. The Germans laid mines in shipping lanes to sink merchant and naval vessels serving Britain. The Allies targeted the German U-boats in the Strait of Dover and the Hebrides. In an attempt to seal up the northern exits of the North Sea, the Allies developed the North Sea Mine Barrage . During a period of five months from June 1918, almost 70,000 mines were laid spanning the North Sea's northern exits. The total number of mines laid in

25350-462: The greatest concentration of enemy firepower will be encountered. Although international law requires signatory nations to declare mined areas, precise locations remain secret, and non-complying parties might not disclose minelaying. While mines threaten only those who choose to traverse waters that may be mined, the possibility of activating a mine is a powerful disincentive to shipping. In the absence of effective measures to limit each mine's lifespan,

25545-566: The hazard to shipping can remain long after the war in which the mines were laid is over. Unless detonated by a parallel time fuze at the end of their useful life, naval mines need to be found and dismantled after the end of hostilities; an often prolonged, costly, and hazardous task. Modern mines containing high explosives detonated by complex electronic fuze mechanisms are much more effective than early gunpowder mines requiring physical ignition. Mines may be placed by aircraft, ships, submarines, or individual swimmers and boatmen. Minesweeping

25740-523: The history of chemical explosives lies in the history of gunpowder . During the Tang dynasty in the 9th century, Taoist Chinese alchemists were eagerly trying to find the elixir of immortality. In the process, they stumbled upon the explosive invention of black powder made from coal, saltpeter, and sulfur in 1044. Gunpowder was the first form of chemical explosives and by 1161, the Chinese were using explosives for

25935-745: The implementation or integration of international legal obligations into domestic law. The modern term "international law" was originally coined by Jeremy Bentham in his 1789 book Introduction to the Principles of Morals and Legislation to replace the older law of nations, a direct translation of the late medieval concepts of ius gentium , used by Hugo Grotius , and droits des gens , used by Emer de Vattel . The definition of international law has been debated; Bentham referred specifically to relationships between states which has been criticised for its narrow scope. Lassa Oppenheim defined it in his treatise as "a law between sovereign and equal states based on

26130-500: The insistence of Admiral Fyodor Litke . The Nobel mines were bought from Swedish industrialist Immanuel Nobel who had entered into collusion with the Russian head of navy Alexander Sergeyevich Menshikov . Despite their high cost (100 Russian rubles ) the Nobel mines proved to be faulty, exploding while being laid, failing to explode or detaching from their wires, and drifting uncontrollably, at least 70 of them were subsequently disarmed by

26325-428: The international community of States as a whole as a norm from which no derogation is permitted and which can be modified only by a subsequent norm of general international law having the same character". Where customary or treaty law conflicts with a peremptory norm, it will be considered invalid, but there is no agreed definition of jus cogens . Academics have debated what principles are considered peremptory norms but

26520-560: The international legal system. The sources of international law applied by the community of nations are listed in Article 38(1) of the Statute of the International Court of Justice , which is considered authoritative in this regard. These categories are, in order, international treaties , customary international law , general legal principles and judicial decisions and the teachings of prominent legal scholars as "a subsidiary means for

26715-498: The law of war and towards the domains such as the law of the sea and commercial treaties. The positivist school grew more popular as it reflected accepted views of state sovereignty and was consistent with the empiricist approach to philosophy that was then gaining acceptance in Europe. The developments of the 17th century culminated at the conclusion of the Peace of Westphalia in 1648, which

26910-443: The laws of war and treaties. Francisco de Vitoria (1486–1546), who was concerned with the treatment of indigenous peoples by Spain, invoked the law of nations as a basis for their innate dignity and rights, articulating an early version of sovereign equality between peoples. Francisco Suárez (1548–1617) emphasised that international law was founded upon natural law and human positive law. Dutch jurist Hugo Grotius (1583–1645)

27105-404: The majority of the fleet then underwent a massive degaussing process, where their hulls had a slight "south" bias induced into them which offset the concentration-effect almost to zero. Initially, major warships and large troopships had a copper degaussing coil fitted around the perimeter of the hull, energized by the ship's electrical system whenever in suspected magnetic-mined waters. Some of

27300-450: The manufacturing operations. A primary explosive is an explosive that is extremely sensitive to stimuli such as impact , friction , heat , static electricity , or electromagnetic radiation . Some primary explosives are also known as contact explosives . A relatively small amount of energy is required for initiation . As a very general rule, primary explosives are considered to be those compounds that are more sensitive than PETN . As

27495-454: The mine and rushed it to the labs at HMS Vernon, where scientists discovered that the mine had a magnetic arming mechanism. A large ferrous object passing through the Earth's magnetic field will concentrate the field through it, due to its magnetic permeability; the mine's detector was designed to trigger as a ship passed over when the Earth's magnetic field was concentrated in the ship and away from

27690-494: The mine. The mine detected this loss of the magnetic field which caused it to detonate. The mechanism had an adjustable sensitivity, calibrated in milligauss . From this data, known methods were used to clear these mines. Early methods included the use of large electromagnets dragged behind ships or below low-flying aircraft (a number of older bombers like the Vickers Wellington were used for this). Both of these methods had

27885-436: The moisture content evaporates during detonation, cooling occurs, which reduces the temperature of reaction. Stability is also affected by the presence of moisture since moisture promotes decomposition of the explosive and, in addition, causes corrosion of the explosive's metal container. Explosives considerably differ from one another as to their behavior in the presence of water. Gelatin dynamites containing nitroglycerine have

28080-443: The molecule is said to have a zero oxygen balance. The molecule is said to have a positive oxygen balance if it contains more oxygen than is needed and a negative oxygen balance if it contains less oxygen than is needed. The sensitivity, strength , and brisance of an explosive are all somewhat dependent upon oxygen balance and tend to approach their maxima as oxygen balance approaches zero. A chemical explosive may consist of either

28275-457: The more important characteristics are listed below: Sensitivity refers to the ease with which an explosive can be ignited or detonated, i.e., the amount and intensity of shock , friction , or heat that is required. When the term sensitivity is used, care must be taken to clarify what kind of sensitivity is under discussion. The relative sensitivity of a given explosive to impact may vary greatly from its sensitivity to friction or heat. Some of

28470-421: The most important and heavily debated topics in recent environmental law. The United Nations Framework Convention on Climate Change , intended to set out a framework for the mitigation of greenhouse gases and responses to resulting environmental changes, was introduced in 1992 and came into force two years later. As of 2023, 198 states were a party. Separate protocols have been introduced through conferences of

28665-427: The mostly widely agreed is the principle of non-use of force. The next year, the ICJ defined erga omnes obligations as those owed to "the international community as a whole", which included the illegality of genocide and human rights. There are generally two approaches to the relationship between international and national law, namely monism and dualism. Monism assumes that international and national law are part of

28860-490: The mudflats off Shoeburyness during low tide. Additionally, the land belonged to the army and a base with men and workshops was at hand. Experts were dispatched from HMS  Vernon to investigate the mine. The Royal Navy knew that mines could use magnetic sensors, Britain having developed magnetic mines in World War I, so everyone removed all metal, including their buttons, and made tools of non-magnetic brass . They disarmed

29055-512: The nation state, although some academics emphasise that it is distinct from either type of law. It was defined by Philip Jessup as "all law which regulates actions or events that transcend national frontiers". A more recent concept is supranational law , which was described in a 1969 paper as "[a] relatively new word in the vocabulary of politics". Systems of supranational law arise when nations explicitly cede their right to make decisions to this system's judiciary and legislature, which then have

29250-400: The naturalists and the positivists. In the former camp was German jurist Samuel von Pufendorf (1632–1694), who stressed the supremacy of the law of nature over states. His 1672 work, Of the Law of Nature and Nations, expanded on the theories of Grotius and grounded natural law to reason and the secular world, asserting that it regulated only external acts of states. Pufendorf challenged

29445-460: The nine primary human rights treaties: The regional human rights enforcement systems operate in Europe, Africa and the Americas through the European Court of Human Rights , the Inter-American Court of Human Rights and the African Court on Human and Peoples' Rights . International human rights has faced criticism for its Western focus, as many countries were subject to colonial rule at the time that

29640-625: The parties , including the Kyoto Protocol which was introduced in 1997 to set specific targets for greenhouse gas reduction and the 2015 Paris Agreement which set the goal of keeping global warming at least below 2 °C (3.6 °F) above pre-industrial levels. Individuals and organisations have some rights under international environmental law as the Aarhus Convention in 1998 set obligations on states to provide information and allow public input on these issues. However few disputes under

29835-475: The parties must be states, however international organisations are also considered to have the capacity to enter treaties. Treaties are binding through the principle of pacta sunt servanda , which allows states to create legal obligations on themselves through consent. The treaty must be governed by international law; however it will likely be interpreted by national courts. The VCLT, which codifies several bedrock principles of treaty interpretation, holds that

30030-405: The parties must sign to indicate acceptance of the wording but there is no requirement on a state to later ratify the treaty, although they may still be subject to certain obligations. When signing or ratifying a treaty, a state can make a unilateral statement to negate or amend certain legal provisions which can have one of three effects: the reserving state is bound by the treaty but the effects of

30225-410: The possibility of such side reactions, condensation of steam, and aqueous solubility of gases like carbon dioxide. Oxygen balance is an expression that is used to indicate the degree to which an explosive can be oxidized. If an explosive molecule contains just enough oxygen to convert all of its carbon to carbon dioxide, all of its hydrogen to water, and all of its metal to metal oxide with no excess,

30420-426: The power to enter treaties, using the Vienna Convention on the Law of Treaties between States and International Organizations or between International Organizations as a basis although it is not yet in force. They may also have the right to bring legal claims against states depending, as set out in Reparation for Injuries , where they have legal personality and the right to do so in their constitution. The UNSC has

30615-400: The power under Chapter VII of the UN Charter to take decisive and binding actions against states committing "a threat to the peace, breach of the peace, or an act of aggression" for collective security although prior to 1990, it has only intervened once, in the case of Korea in 1950. This power can only be exercised, however, where a majority of member states vote for it, as well as receiving

30810-426: The production of light , heat , sound , and pressure . An explosive charge is a measured quantity of explosive material, which may either be composed solely of one ingredient or be a mixture containing at least two substances. The potential energy stored in an explosive material may, for example, be: Explosive materials may be categorized by the speed at which they expand. Materials that detonate (the front of

31005-519: The project as "not fair and honest warfare". In 1854, during the unsuccessful attempt of the Anglo-French (101 warships) fleet to seize the Kronstadt fortress, British steamships HMS  Merlin (9 June 1855, the first successful mining in Western history), HMS  Vulture and HMS Firefly suffered damage due to the underwater explosions of Russian naval mines. Russian naval specialists set more than 1,500 naval mines, or infernal machines , designed by Moritz von Jacobi and by Immanuel Nobel , in

31200-417: The regimes set out in environmental agreements are referred to the ICJ, as the agreements tend to specify their compliance procedures. These procedures generally focus on encouraging the state to once again become compliant through recommendations but there is still uncertainty on how these procedures should operate and efforts have been made to regulate these processes although some worry that this will undercut

31395-415: The relevant provisions are precluded or changes, the reserving state is bound by the treaty but not the relevant provisions, or the reserving state is not bound by the treaty. An interpretive declaration is a separate process, where a state issues a unilateral statement to specify or clarify a treaty provision. This can affect the interpretation of the treaty but it is generally not legally binding. A state

31590-400: The republican revolutions of the United States and France. Until the mid-19th century, relations between states were dictated mostly by treaties, agreements between states to behave in a certain way, unenforceable except by force, and nonbinding except as matters of honour and faithfulness. One of the first instruments of modern armed conflict law was the Lieber Code of 1863, which governed

31785-403: The responsibility of the US Army's Artillery Corps, and in 1907 this was a founding responsibility of the United States Army Coast Artillery Corps . The Imperial Russian Navy , a pioneer in mine warfare, successfully deployed mines against the Ottoman Navy during both the Crimean War and the Russo-Turkish War (1877-1878) . During the War of the Pacific (1879-1883), the Peruvian Navy , at

31980-420: The right to make laws that are directly effective in each member state. This has been described as "a level of international integration beyond mere intergovernmentalism yet still short of a federal system". The most common example of a supranational system is the European Union . With origins tracing back to antiquity , states have a long history of negotiating interstate agreements. An initial framework

32175-523: The rights of neutral parties, and the consolidation and partition of states; these concepts were sometimes applied to relations with barbarians along China's western periphery beyond the Central Plains . The subsequent Warring States period saw the development of two major schools of thought, Confucianism and Legalism , both of which held that the domestic and international legal spheres were closely interlinked, and sought to establish competing normative principles to guide foreign relations. Similarly,

32370-508: The same legal order. Therefore, a treaty can directly become part of national law without the need for enacting legislation, although they will generally need to be approved by the legislature. Once approved, the content of the treaty is considered as a law that has a higher status than national laws. Examples of countries with a monism approach are France and the Netherlands. The dualism approach considers that national and international law are two separate legal orders, so treaties are not granted

32565-403: The same topics. Many of the primary human rights conventions also form part of international labour law, providing protection in employment and against discrimination on the grounds of gender and race. It has been claimed that there is no concept of discrete international environmental law , with the general principles of international law instead being applied to these issues. Since the 1960s,

32760-439: The ships lacked the generating capacity to energise such a coil. It was found that "wiping" a current-carrying cable up and down a ship's hull temporarily canceled the ships' magnetic signature sufficiently to nullify the threat. This started in late 1939, and by 1940 merchant vessels and the smaller British warships were largely immune for a few months at a time until they once again built up a field. The cruiser HMS  Belfast

32955-406: The sick and wounded. During the European Middle Ages , international law was concerned primarily with the purpose and legitimacy of war, seeking to determine what constituted "just war ". The Greco-Roman concept of natural law was combined with religious principles by Jewish philosopher Maimonides (1135–1204) and Christian theologian Thomas Aquinas (1225–1274) to create the new discipline of

33150-502: The six organs of the UN, based out of the Hague with a panel of fifteen permanent judges. It has jurisdiction to hear cases involving states but cannot get involved in disputes involving individuals or international organizations. The states that can bring cases must be party to the Statute of the ICJ , although in practice most states are UN members and would therefore be eligible. The court has jurisdiction over all cases that are referred to it and all matters specifically referred to in

33345-409: The successful use of mines. The first ship sunk by a mine, USS  Cairo , foundered in 1862 in the Yazoo River . Rear Admiral David Farragut 's famous/apocryphal command during the Battle of Mobile Bay in 1864, " Damn the torpedoes, full speed ahead! " refers to a minefield laid at Mobile , Alabama. After 1865 the United States adopted the mine as its primary weapon for coastal defense . In

33540-492: The sum of the masses of the two initial layers. There are applications where a shock wave, and electrostatics, can result in high velocity projectiles such as in an electrostatic particle accelerator . An explosion is a type of spontaneous chemical reaction that, once initiated, is driven by both a large exothermic change (great release of heat) and a large positive entropy change (great quantities of gases are released) in going from reactants to products, thereby constituting

33735-418: The support of the permanent five members of the UNSC. This can be followed up with economic sanctions, military action, and similar uses of force. The UNSC also has a wide discretion under Article 24, which grants "primary responsibility" for issues of international peace and security. The UNGA, concerned during the Cold War with the requirement that the USSR would have to authorise any UNSC action, adopted

33930-472: The teleological approach which interprets a treaty according to its objective and purpose. A state must express its consent to be bound by a treaty through signature, exchange of instruments, ratification, acceptance, approval or accession. Accession refers to a state choosing to become party to a treaty that it is unable to sign, such as when establishing a regional body. Where a treaty states that it will be enacted through ratification, acceptance or approval,

34125-499: The test methods used to determine sensitivity relate to: Specific explosives (usually but not always highly sensitive on one or more of the three above axes) may be idiosyncratically sensitive to such factors as pressure drop, acceleration, the presence of sharp edges or rough surfaces, incompatible materials, or even —  in rare cases —  nuclear or electromagnetic radiation. These factors present special hazards that may rule out any practical utility. Sensitivity

34320-403: The treaty contradicts peremptory norms. Customary international law requires two elements: a consistent practice of states and the conviction of those states that the consistent practice is required by a legal obligation, referred to as opinio juris . Custom distinguishes itself from treaty law as it is binding on all states, regardless of whether they have participated in the practice, with

34515-434: The two areas of law has been debated as scholars disagree about the nature of their relationship. Joseph Story , who originated the term "private international law", emphasised that it must be governed by the principles of public international law but other academics view them as separate bodies of law. Another term, transnational law, is sometimes used to refer to a body of both national and international rules that transcend

34710-425: The two layers. As the length of time the shock wave spends at any point is small, we can see mixing of the two metals and their surface chemistries, through some fraction of the depth, and they tend to be mixed in some way. It is possible that some fraction of the surface material from either layer eventually gets ejected when the end of material is reached. Hence, the mass of the now "welded" bilayer, may be less than

34905-492: The war concluded, eight countries conducted clearance operations. Houthi forces in the Yemeni Civil War have made frequent use of naval mines, laying over 150 in the Red Sea throughout the conflict. In the first month of the 2022 Russian invasion of Ukraine , Ukraine accused Russia of deliberately employing drifting mines in the Black Sea area. Around the same time, Turkish and Romanian military diving teams were involved in defusing operations, when stray mines were spotted near

35100-417: The world, from the eastern Mediterranean to East Asia . In Ancient Greece , many early peace treaties were negotiated between its city-states and, occasionally, with neighbouring states. The Roman Empire established an early conceptual framework for international law, jus gentium , which governed the status of foreigners living in Rome and relations between foreigners and Roman citizens . Adopting

35295-799: Was nitroglycerin , developed in 1847. Since nitroglycerin is a liquid and highly unstable, it was replaced by nitrocellulose , trinitrotoluene ( TNT ) in 1863, smokeless powder , dynamite in 1867 and gelignite (the latter two being sophisticated stabilized preparations of nitroglycerin rather than chemical alternatives, both invented by Alfred Nobel ). World War I saw the adoption of TNT in artillery shells. World War II saw extensive use of new explosives (see: List of explosives used during World War II ) . In turn, these have largely been replaced by more powerful explosives such as C-4 and PETN . However, C-4 and PETN react with metal and catch fire easily, yet unlike TNT, C-4 and PETN are waterproof and malleable. The largest commercial application of explosives

35490-408: Was the sister ship of the RMS Titanic , and the RMS  Olympic . During World War II , the U-boat fleet, which dominated much of the battle of the Atlantic, was small at the beginning of the war and much of the early action by German forces involved mining convoy routes and ports around Britain. German submarines also operated in the Mediterranean Sea , in the Caribbean Sea , and along

35685-535: Was among the earliest scholars to expand international law beyond European Christian nations, advocating for its application and recognition among all peoples on the basis of shared humanity. In contrast, positivist writers, such as Richard Zouche (1590–1661) in England and Cornelis van Bynkershoek (1673–1743) in the Netherlands, argued that international law should derive from the actual practice of states rather than Christian or Greco-Roman sources. The study of international law shifted away from its core concern on

35880-567: Was based on the division of the world into three categories: the dar al-Islam , where Islamic law prevailed; the dar al-sulh , non-Islamic realms that concluded an armistice with a Muslim government; and the dar al-harb , non-Islamic lands which were contested through jihad . Islamic legal principles concerning military conduct served as precursors to modern international humanitarian law and institutionalised limitations on military conduct, including guidelines for commencing war, distinguishing between civilians and combatants and caring for

36075-524: Was conceptualised by the Ancient Romans and this idea of ius gentium has been used by various academics to establish the modern concept of international law. Among the earliest recorded examples are peace treaties between the Mesopotamian city-states of Lagash and Umma (approximately 3100 BCE), and an agreement between the Egyptian pharaoh , Ramesses II , and the Hittite king , Ḫattušili III , concluded in 1279 BCE. Interstate pacts and agreements were negotiated and agreed upon by polities across

36270-476: Was considered the founder of private international law . Another Italian jurist, Baldus de Ubaldis (1327–1400), provided commentaries and compilations of Roman, ecclesiastical, and feudal law , creating an organised source of law that could be referenced by different nations. Alberico Gentili (1552–1608) took a secular view to international law, authoring various books on issues in international law, notably Law of War , which provided comprehensive commentary on

36465-402: Was effective against this type of mine, but this consumed valuable time and resources and required harbours to be closed. Later, some ships survived mine blasts, limping into port with buckled plates and broken backs. This appeared to be due to a new type of mine, detecting ships by their proximity to the mine (an influence mine) and detonating at a distance, causing damage with the shock wave of

36660-415: Was equal to 14 kg (31 lb) of black powder . In the summer of 1853, the production of the mine was approved by the Committee for Mines of the Ministry of War of the Russian Empire . In 1854, 60 Jacobi mines were laid in the vicinity of the Forts Pavel and Alexander ( Kronstadt ), to deter the British Baltic Fleet from attacking them. It gradually phased out its direct competitor the Nobel mine on

36855-426: Was established in 1947 to develop and codify international law. In the 1940s through the 1970s, the dissolution of the Soviet bloc and decolonisation across the world resulted in the establishment of scores of newly independent states. As these former colonies became their own states, they adopted European views of international law. A flurry of institutions, ranging from the International Monetary Fund (IMF) and

37050-473: Was founded to safeguard peace and security. International law began to incorporate notions such as self-determination and human rights . The United Nations (UN) was established in 1945 to replace the League, with an aim of maintaining collective security. A more robust international legal order followed, buttressed by institutions such as the International Court of Justice (ICJ) and the UN Security Council (UNSC). The International Law Commission (ILC)

37245-456: Was further disguised by wearing dark clothes and a black cap. His task was to approach the French ship, hook the torpedo to the anchor cable and, having activated the device by removing a pin, remove the paddles and escape before the torpedo detonated. Also to be deployed were large numbers of casks filled with gunpowder, ballast and combustible balls. They would float in on the tide and on washing up against an enemy's hull, explode. Also included in

37440-419: Was loaded in a wooden box, sealed with putty . General Qi Jiguang made several timed, drifting explosives, to harass Japanese pirate ships. The Tiangong Kaiwu ( The Exploitation of the Works of Nature ) treatise, written by Song Yingxing in 1637, describes naval mines with a ripcord pulled by hidden ambushers located on the nearby shore who rotated a steel wheel flint mechanism to produce sparks and ignite

37635-470: Was originally an intention that a state must have self-determination , but now the requirement is for a stable political environment. The final requirement of being able to enter relations is commonly evidenced by independence and sovereignty. Under the principle of par in parem non habet imperium , all states are sovereign and equal, but state recognition often plays a significant role in political conceptions. A country may recognise another nation as

37830-419: Was the Central American Court of Justice , prior to World War I, when the Permanent Court of International Justice (PCIJ) was established. The PCIJ was replaced by the ICJ, which is the best known international court due to its universal scope in relation to geographical jurisdiction and subject matter . There are additionally a number of regional courts, including the Court of Justice of the European Union ,

38025-405: Was used on the Delaware River as a drift mine, destroying a small boat near its intended target, a British warship. The 1804 Raid on Boulogne made extensive use of explosive devices designed by inventor Robert Fulton . The 'torpedo-catamaran' was a coffer-like device balanced on two wooden floats and steered by a man with a paddle. Weighted with lead so as to ride low in the water, the operator

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