Introduction of International Law

International Law, principles, rules, and standards that govern nations and other participants in international affairs in their relations with one another. International law is the law of the international community. Most international law consists of long-standing customs, provisions agreed to in treaties, and generally accepted principles of law recognized by nations. Some international law is also created by the rulings of international courts and organizations.

The purposes of international law include resolution of problems of a regional or global scope (such as environmental pollution or global warming), regulation of areas outside the control of any one nation (such as outer space or the high seas), and adoption of common rules for multinational activities (such as air transport or postal service). International law also aims to maintain peaceful international relations when possible and resolve international tensions peacefully when they develop, to prevent needless suffering during wars, and to improve the human condition during peacetime.

Enforcement of international law is often difficult because nations are sovereign (independent) powers that may put their own interests ahead of those of the international community. In addition, the mechanisms of enforcement are young and not well developed. Enforcement may be effectively achieved, however, through the actions of individual nations, agencies of international organizations such as the United Nations (UN), and international courts. The United Nations Security Council can authorize economic sanctions, diplomatic sanctions, or military force to maintain or restore international peace and security.

International law began as a system governing the relations among sovereign states, and states have always been the primary legal entities affected by international law. As the global system has become more complex, however, international law has come to recognize and regulate international organizations, businesses, nonprofit entities, and individuals. The emergence of international human rights law and, more recently, international criminal law reflects the fact that individuals today are direct subjects of international law in certain respects.