The question of the judicial review of the acts of the Security Council is one of the most urgent and revealing contemporary issues facing the United Nations. Does the Security Council, acting with the unanimous support of its permanent members, have unlimited powers? Where do its prerogatives end? Is the Security Council alone entitled to decide where its powers begin and end? Are the actions of the Security Council exempt from any control? Judge Bedjaoui's intimate knowledge of the International Court of Justice enables him to approach the issue of the legality of Security Council actions from the perspective of a jurist. His book is both a work on positive law and an essay on normative law.