The world has changed radically since 1989, when the General Assembly declared the period from 1990 to 1999 as the United Nations Decade of International Law. During that time, the international community claimed some major achievements as reflected by the adoption of conventions and treaties. This publication presents a collection of essays from legal advisers of States and international organizations, all of whom are among those committed to promoting respect for international law. Their contribution provides a practical perspective on international law, viewed from the standpoint of those involved in its formation, application and administration.