This chapter presents a brief history of international law. It proceeds chronologically, beginning with an overview of the ancient world, followed by a more detailed discussion of the great era of natural law in the European Middle Ages. The classical period (1600–1815) witnessed the emergence of a dualistic view of international law, with the law of nature and the law of nations co-existing (more or less amicably). In the nineteenth century—the least-known part of international law—doctrinaire positivism was the prevailing viewpoint, though not the exclusive one. For the inter-war years, developments both inside and outside the League of Nations are considered. The chapter concludes with some historically oriented comments on international law during the post-1945 period.
Chapter
A Short History of International Law
Stephen C Neff
Chapter
1. A Short History of International Law
Stephen C Neff
This chapter presents a brief history of international law. It proceeds chronologically, beginning with an overview of the ancient world, followed by a more detailed discussion of the great era of natural law in the European Middle Ages. The classical period (1600–1815) witnessed the emergence of a dualistic view of international law, with the law of nature and the law of nations coexisting (more or less amicably). In the nineteenth century—the least-known part of international law—doctrinaire positivism was the prevailing viewpoint, though not the exclusive one. For the interwar years, developments both inside and outside the League of Nations are considered. The chapter concludes with some historically oriented comments on international law during the post-1945 period.
Chapter
1. The nature of international law and the international legal system
This chapter briefly discusses the nature of the international legal system. The premise is that the structure of the international legal system is fundamentally different from that of national legal order: contrary to the vertical structure encountered in domestic settings, in international law the structure is horizontal. States enjoy sovereign equality, while both international law-making and international adjudication are based on the consent of the States. There are various theories that have attempted to describe the nature of the international law, including naturalism, positivism, formalism, and realism. Also significant is the the existence of a certain hierarchy in the international legal system, in the sense that there are some peremptory norms of international law, such as the prohibition of torture and genocide, to which there is no derogation.
