Mr. Asamoah's book is concerned with an area of growing importance in the evolution of contemporary international law. The traditional division of the sources of International law into custom and treaties has already been supplemented in Article 38 of the Statute of the International Court of Justice by the "general principles of law re cognized by civilized nations" and-as subsidiary sources, the judicial decisions and the teachings of highly qualified publicists. But in order to cope with the diversity of international law in our time, we have to look to a far greater variety of sources of international law, and we shall have to recognize that, in accordance with the many-sided character of international law, these sources may vary greatly in intensity. In recent years, Declaratory Resolutions of the General Assembly have been much concerned with the general princi ples of international law. Sometimes these Declarations are interpre tations of the Charter and other instruments; sometimes they are evi dence of state practice and a developing customary international law ; sometimes they formulate new principles which, in some cases will eventually lead to international treaties or new custom, or in other cases will be accepted as authorative statements of international legal principles, in circumstances where a formal treaty cannot be attained. There are many reasons--often of an internal character-which prevent the conclusion of a treaty but not the acceptance of the principles contained in it.

The United Nations, whose specialized agencies were the subject of an Appendix to the 1958 edition of Oppenheim's International Law: Peace, has expanded beyond all recognition since its founding in 1945.This volume represents a study that is entirely new, but prepared in the way that has become so familiar over succeeding editions of Oppenheim. An authoritative and comprehensive study of the United Nations' legal practice, this volume covers the formal structures of the UN as it has expanded over the years, and all that this complex organization does. All substantive issues are addressed in separate sections, including among others, the responsibilities of the UN, financing, immunities, human rights, preventing armed conflicts and peacekeeping, and judicial matters. In examining the evolving structures and ever expanding work of the United Nations, this volume follows the long-held tradition of Oppenheim by presenting facts uncoloured by personal opinion, in a succinct text that also offers in the footnotes a wealth of information and ideas to be explored. It is book that, while making all necessary reference to the Charter, the Statute of the International Court of Justice, and other legal instruments, tells of the realities of the legal issues as they arise in the day to day practice of the United Nations. Missions to the UN, Ministries of Foreign Affairs, practitioners of international law, academics, and students will all find this book to be vital in their understanding of the workings of the legal practice of the UN. Research for this publication was made possible by The Balzan Prize, which was awarded to Rosalyn Higgins in 2007 by the International Balzan Foundation.

Fifty years after the adoption of the Declaration on Permanent Sovereignty over Natural Resources by the General Assembly of the United Nations in December 1962, this volume assesses the evolution of the principle of permanent sovereignty over natural resources into a principle of customary international law as well as related developments. International environmental and human rights law leave unresolved questions regarding the limitations of this principle, e.g. extraterritorial and international influences such as the applicable criminal and tort law, as well as the extraterritorial and international promotion of good governance, including transparency obligations.

This book critically analyses the 2011 intervention in Libya arguing that the manner in which the intervention was sanctioned, prosecuted and justified has a number of troubling implications for the both the future of humanitarian intervention and international peace and security.