As the UN continues to demonstrate the potential for new vitality, this new edition of the most concise introduction to the United Nations provides the essential information and background to half-a-century of the world organization's experience. It sets out the fundamental features of the structure of the UN and traces the political developments around such topics as maintaining international peace, protecting human rights, and improving economic welfare. The book provides essential information and analysis for students and lecturers in international politics, international relations, strategic and security studies and peace studies. It will be of use to policy-makers and practitioners in international politics in international organizations, foreign ministries and diplomatic embassies.