Contents: The Concept of Collective Security Law: The place of law in collective security, Martti Koskenniemi; Diplomacy, Hans J. Morgenthau; The covenant and the charter, J.L. Brierly; The role of law and legal considerations in the functioning of the United Nations, V.S. Mani. Actors Within the United Nations: Powers and Legitimacy: The legitimacy of the collective authority of the Security Council, David D. Caron; Does the United Nations Security Council have the competence to act as court and legislature?, Keith Harper; The police in the temple: order, justice and the UN: a dialectical view, Martti Koskenniemi; The legality of bombing in the name of humanity, N.D. White; The 'inherent' powers of the UN Secretary-General in the political sphere: a legal analysis, Roberto Lavalle; Judging the security council, Jose A. Alvarez; The role of the International Court of Justice in the maintenance of international peace, Dapo Akande. UN Collective Security Measures: Boom or bust? The changing nature of UN peacekeeping, David M. Malone and Karin Wermester; The applicability of international law standards to United Nations economic sanctions programmes, W. Michael Reisman and Douglas L. Stevick; The United Nations system: a place for criminal courts?, Colin Warbrick; United Nations law in the Gulf conflict, Oscar Schachter; Bypassing the Security Council: ambiguous authorizations to use force, cease fires and the Iraqi inspection regime, Jules Lobel and Michael Ratner. Collective Security Outside the UN: NATO, the UN and the use of force: legal aspects, Bruno Simma; Security Council control over regional action, Christian Walter; The search for subsidiarity: the UN, African regional organizations and humanitarian action, David O'Brien; Name index.