THE ORIGIN AND DEVELOPMENT OF INTERNATIONAL LAW

INTRODUCTION

International law is a distinctive part of the general structure of international relations. In contemplating responses to a particular international situation, states usually consider relevant international laws. Although considerable attention is invariably focused on violations of international law, states generally are careful to ensure that their actions conform to the rules and principles of international law, because acting otherwise would be regarded negatively by the international community. The rules of international law are rarely enforced by military means or even by the use of economic sanctions. Instead, the system is sustained by reciprocity or a sense of enlightened self-interest. States that breach international rules suffer a decline in credibility that may prejudice them in future relations with other states. Thus, a violation of a treaty by one state to its advantage may induce other states to breach other treaties and thereby cause harm to the original violator. Furthermore, it is generally realized that consistent rule violations would jeopardize the value that the system brings to the community of states, international organizations, and other actors.

The UN Security Council may authorize the use of force to compel states to comply with its decisions, but only in specific and limited circumstances; essentially, there must be a prior act of aggression or the threat of such an act. Moreover, any such enforcement action can be vetoed by any of the council’s five permanent members (China, France, Russia, the United Kingdom, and the United States). Because there is no standing UN military, the forces involved must be assembled from member states on an ad hoc basis. (Shaw, 2014)

Definition of terms

International law is distinct from international comity, which comprises legally nonbinding practices adopted by states for reasons of courtesy (e.g., the saluting of the flags of foreign warships at sea). In addition, the study of international law, or public international law, is distinguished from the field of conflict of laws, or private international law, which is concerned with the rules of municipal law as international lawyers term the domestic law of states of different countries where foreign elements are involved. (Byers (2001)

 

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EVOLUTION OF INTERNATIONAL LAW

Beginnings

There was little scope for an international law in the period of ancient and medieval empires, and its modern beginnings coincide, therefore, with the rise of national states after the Middle Ages. Rules of maritime intercourse and rules respecting diplomatic agents (see diplomatic service) soon came into existence. At the beginning of the 17th cent., the great multitude of small independent states, which were finding international lawlessness intolerable, prepared the way for the favorable reception given to the De jure belli ac pacis [concerning the law of war and peace] (1625) of Hugo Grotius, the first comprehensive formulation of international law. Though not formally accepted by any nation, his opinions and observations were afterward regularly consulted, and they often served as a basis for reaching agreement in international disputes. The most significant principle he enunciated was the notion of sovereignty and legal equality of all states. Other important writers on international law were Cornelius van Bynkershoek, Georg F. von Martens, Christian von Wolff, and Emerich Vattel.

Historical development

International law reflects the establishment and subsequent modification of a world system founded almost exclusively on the notion that independent sovereign states are the only relevant actors in the international system. The essential structure of international law was mapped out during the European Renaissance, though its origins lay deep in history and can be traced to cooperative agreements between peoples in the ancient Middle East. Among the earliest of these agreements were a treaty between the rulers of Lagash and Umma (in the area of Mesopotamia) in approximately 2100 bce and an agreement between the Egyptian pharaoh Ramses II and Hattusilis III, the king of the Hittites, concluded in 1258 bce. A number of pacts were subsequently negotiated by various Middle Eastern empires. The long and rich cultural traditions of ancient Israel, the Indian subcontinent, and China were also vital in the development of international law. In addition, basic notions of governance, of political relations, and of the interaction of independent units provided by ancient Greek political philosophy and the relations between the Greek city-states constituted important sources for the evolution of the international legal system.

Many of the concepts that today underpin the international legal order were established during the Roman Empire. The jus gentium (Latin: “law of nations”), for example, was invented by the Romans to govern the status of foreigners and the relations between foreigners and Roman citizens. In accord with the Greek concept of natural law, which they adopted, the Romans conceived of the jus gentium as having universal application. In the Middle Ages, the concept of natural law, infused with religious principles through the writings of the Jewish philosopher Moses Maimonides (1135–1204) and the theologian St. Thomas Aquinas (1224/25–1274), became the intellectual foundation of the new discipline of the law of nations, regarded as that part of natural law that applied to the relations between sovereign states. (Byers (2001)

After the collapse of the western Roman Empire in the 5th century ce, Europe suffered from frequent warring for nearly 500 years. Eventually, a group of nation-states emerged, and a number of supranational sets of rules were developed to govern interstate relations, including canon law, the law merchant (which governed trade), and various codes of maritime law—e.g., the 12th-century Rolls of Oléron, named for an island off the west coast of France, and the Laws of Wisby (Visby), the seat of the Hanseatic League until 1361. In the 15th century the arrival of Greek scholars in Europe from the collapsing Byzantine Empire and the introduction of the printing press spurred the development of scientific, humanistic, and individualist thought, while the expansion of ocean navigation by European explorers spread European norms throughout the world and broadened the intellectual and geographic horizons of western Europe. The subsequent consolidation of European states with increasing wealth and ambitions, coupled with the growth in trade, necessitated the establishment of a set of rules to regulate their relations. In the 16th century the concept of sovereignty provided a basis for the entrenchment of power in the person of the king and was later transformed into a principle of collective sovereignty as the divine right of kings gave way constitutionally to parliamentary or representative forms of government. Sovereignty also acquired an external meaning, referring to independence within a system of competing nation-states. (Shaw, 2014)  

Early writers who dealt with questions of governance and relations between nations included the Italian lawyers Bartolo da Sassoferrato (1313/14–1357), regarded as the founder of the modern study of private international law, and Baldo degli Ubaldi (1327–1400), a famed teacher, papal adviser, and authority on Roman and feudal law. The essence of the new approach, however, can be more directly traced to the philosophers of the Spanish Golden Age of the 16th and 17th centuries. Both Francisco de Vitoria (1486–1546), who was particularly concerned with the treatment of the indigenous peoples of South America by the conquering Spanish forces, and Francisco Suárez (1548–1617) emphasized that international law was founded upon the law of nature. In 1598 Italian jurist Alberico Gentili (1552–1608), considered the originator of the secular school of thought in international law, published De jure belli libri tres (1598; Three Books on the Law of War), which contained a comprehensive discussion of the laws of war and treaties. Gentili’s work initiated a transformation of the law of nature from a theological concept to a concept of secular philosophy founded on reason. The Dutch jurist Hugo Grotius (1583–1645) has influenced the development of the field to an extent unequaled by any other theorist, though his reputation as the father of international law has perhaps been exaggerated. Grotius excised theology from international law and organized it into a comprehensive system, especially in De Jure Belli ac Pacis (1625; On the Law of War and Peace). Grotius emphasized the freedom of the high seas, a notion that rapidly gained acceptance among the northern European powers that were embarking upon extensive missions of exploration and colonization around the world. (Shaw, 2014)  

The scholars who followed Grotius can be grouped into two schools, the naturalists and the positivists. The former camp included the German jurist Samuel von Pufendorf (1632–94), who stressed the supremacy of the law of nature. In contrast, positivist writers, such as Richard Zouche (1590–1661) in England and Cornelis van Bynkershoek (1673–1743) in the Netherlands, emphasized the actual practice of contemporary states over concepts derived from biblical sources, Greek thought, or Roman law. These new writings also focused greater attention on the law of peace and the conduct of interstate relations than on the law of war, as the focus of international law shifted away from the conditions necessary to justify the resort to force in order to deal with increasingly sophisticated interstate relations in areas such as the law of the sea and commercial treaties. The positivist school made use of the new scientific method and was in that respect consistent with the empiricist and inductive approach to philosophy that was then gaining acceptance in Europe. Elements of both positivism and natural law appear in the works of the German philosopher Christian Wolff (1679–1754) and the Swiss jurist Emerich de Vattel (1714–67), both of whom attempted to develop an approach that avoided the extremes of each school. During the 18th century, the naturalist school was gradually eclipsed by the positivist tradition, though, at the same time, the concept of natural rights which played a prominent role in the American and French revolutions was becoming a vital element in international politics. In international law, however, the concept of natural rights had only marginal significance until the 20th century.

Positivism’s influence peaked during the expansionist and industrial 19th century, when the notion of state sovereignty was buttressed by the ideas of exclusive domestic jurisdiction and nonintervention in the affairs of other states ideas that had been spread throughout the world by the European imperial powers. In the 20th century, however, positivism’s dominance in international law was undermined by the impact of two world wars, the resulting growth of international organizations e.g., the League of Nations, founded in 1919, and the UN, founded in 1945 and the increasing importance of human rights. Having become geographically international through the colonial expansion of the European powers, international law became truly international in the first decades after World War II, when decolonization resulted in the establishment of scores of newly independent states. The varying political and economic interests and needs of these states, along with their diverse cultural backgrounds, infused the hitherto European-dominated principles and practices of international law with new influences. (Shaw, 2014)  

The development of international law both its rules and its institutions is inevitably shaped by international political events. From the end of World War II until the 1990s, most events that threatened international peace and security were connected to the Cold War between the Soviet Union and its allies and the U.S.-led Western alliance. The UN Security Council was unable to function as intended, because resolutions proposed by one side were likely to be vetoed by the other. The bipolar system of alliances prompted the development of regional organizations e.g., the Warsaw Pact organized by the Soviet Union and the North Atlantic Treaty Organization (NATO) established by the United States and encouraged the proliferation of conflicts on the peripheries of the two blocs, including in Korea, Vietnam, and Berlin. Furthermore, the development of norms for protecting human rights proceeded unevenly, slowed by sharp ideological divisions. (Byers (2001)

The Cold War also gave rise to the coalescence of a group of nonaligned and often newly decolonized states, the so-called “Third World,” whose support was eagerly sought by both the United States and the Soviet Union. The developing world’s increased prominence focused attention upon the interests of those states, particularly as they related to decolonization, racial discrimination, and economic aid. It also fostered greater universalism in international politics and international law. The ICJ’s statute, for example, declared that the organization of the court must reflect the main forms of civilization and the principal legal systems of the world. Similarly, an informal agreement among members of the UN requires that nonpermanent seats on the Security Council be apportioned to ensure equitable regional representation; 5 of the 10 seats have regularly gone to Africa or Asia, two to Latin America, and the remainder to Europe or other states. Other UN organs are structured in a similar fashion.

The collapse of the Soviet Union and the end of the Cold War in the early 1990s increased political cooperation between the United States and Russia and their allies across the Northern Hemisphere, but tensions also increased between states of the north and those of the south, especially on issues such as trade, human rights, and the law of the sea. Technology and globalization—the rapidly escalating growth in the international movement in goods, services, currency, information, and persons—also became significant forces, spurring international cooperation and somewhat reducing the ideological barriers that divided the world, though globalization also led to increasing trade tensions between allies such as the United States and the European Union (EU).

Since the 1980s, globalization has increased the number and sphere of influence of international and regional organizations and required the expansion of international law to cover the rights and obligations of these actors. Because of its complexity and the sheer number of actors it affects, new international law is now frequently created through processes that require near-universal consensus. In the area of the environment, for example, bilateral negotiations have been supplemented and in some cases replaced by multilateral ones, transmuting the process of individual state consent into community acceptance. Various environmental agreements and the Law of the Sea treaty (1982) have been negotiated through this consensus-building process. International law as a system is complex. Although in principle it is “horizontal,” in the sense of being founded upon the concept of the equality of states one of the basic principles of international law in reality some states continue to be more important than others in creating and maintaining international law. (Shaw, 2014)  

Development to World War I

The growth of international law came largely through treaties concluded among states accepted as members of the "family of nations," which first included the states of Western Europe, then the states of the New World, and, finally, the states of Asia and other parts of the world. The United States contributed much to the laws of neutrality and aided in securing recognition of the doctrine of freedom of the seas (see seas, freedom of the). The provisions of international law were ignored in the Napoleonic period, but the Congress of Vienna (see Vienna, Congress of) reestablished and added much, particularly in respect to international rivers and the classification and treatment of diplomatic agents. The Declaration of Paris (see Paris, Declaration of) abolished privateering, drew up rules of contraband, and stipulated rules of blockade. The Geneva Convention (1864) provided for more humane treatment of the wounded. The last quarter of the 19th century saw many international conventions concerning prisoners of war, communication, collision and salvage at sea, protection of migrating bird and sea life, and suppression of prostitution. Resort to arbitration of disputes became more frequent. The lawmaking conventions of the Hague Conferences represent the chief development of international law before World War I. The Declaration of London (see London, Declaration of) contained a convention of prize law, which, although not ratified, is usually followed. At the Pan-American Congresses, many lawmaking agreements affecting the Western Hemisphere have been signed.

Effect of the World Wars

In World War I, no strong nations remained on the sidelines to give effective backing to international law, and the concept of third party arbitration was again endangered; many of the standing provisions of international law were violated. New modes of warfare presented new problems in the laws of war, but attempts after the war to effect disarmament and to prohibit certain types of weapons (see war, laws of) failed, as the outbreak and course of World War II showed. The end of hostilities in 1945 saw the world again faced with grave international problems, including rectification of boundaries, care of refugees, and administration of the territory of the defeated enemy (see trusteeship, territorial). The inadequacy of the League of Nations and of such idealistic renunciations of war as the Kellogg-Briand Pact led to the formation of the United Nations as a body capable of compelling obedience to international law and maintaining peace. After World War II, a notable advance in international law was the definition and punishment of war crimes. Attempts at a general codification of international law, however, proceeded slowly under the International Law Commission established in 1947 by the United Nations.

CONCLUSION

The nuclear age and the space age have led to new developments in international law. The basis of space law was developed in the 1960s under United Nations auspices. Treaties have been signed mandating the internationalization of outer space (1967) and other celestial bodies (1979). The 1963 limited test ban treaty (see disarmament, nuclear) prohibited nuclear tests in the atmosphere, in outer space, and underwater. The nuclear nonproliferation treaty (1968) attempted to limit the spread of nuclear weapons. The agreements of the Strategic Arms Limitation Talks, signed by the United States and the USSR in 1972, limited defensive and offensive weapon systems. This was first of many international arms treaties signed between the two nations until the dissolution of the Soviet Union. Other treaties have covered the internationalization of Antarctica (1959), narcotic interdiction (1961), satellite communications (1963), and terrorism (1973). The Law of the Sea treaty (1982, in force from 1994) clarified the status of territorial waters and the exploitation of the seabed. Environmental issues have led to a number of international treaties, including agreements covering fisheries (1958), endangered species (1973), global warming and biodiversity (1992). Since the signing of the General Agreement on Tariffs and Trade (GATT) in 1947, there have been numerous international trade agreements. The European Union (prior to 1993, the European Community) has made moves toward the establishment of a regional legal system; in 1988 a Court of First Instance was established to serve as a court of original jurisdiction on certain economic matters. The establishment of the International Criminal Court (2002), with jurisdiction over war crimes, crimes against humanity, and related matters, marked a major step forward in international law despite the United States' repudiation of the treaty under President George W. Bush.

REFERENCES

Malcolm Shaw, (2014)   International law Alternate title: public international law ;Courtesy of the National Portrait Gallery, London

Michael Byers (2001)The Role of Law in International Politics: Essays in International Relations and International Law Published to Oxford Scholarship Online: January 2010