Providing a comprehensive and contemporary examination of the United Nations, the authors use a thematic approach in exploring its role in three core issues in international relations: international peace and security; human rights and humanitarian affairs; and building peace through sustainable development. Historically informed and analytically rich, The United Nations and Changing World Politics: Fourth Edition introduces the reader to the opportunities and limits of the central international organization. The authors bring to bear both extensive practical experience and scholarly depth in assessing the strengths and weaknesses of the UN's performance, as well as providing practical suggestions for improvements. This new edition is revised substantially to take into account recent events, including the aftermath of September 11th, the War in Iraq, and the beginnings of the international criminal court. It is an important resource for students of international relations, peace and war, third world development, and human rights.