Questioning many of the traditional assumptions found in discussions of ethics in international relations, Daniel Warner presents an understanding of what an ""ethic of responsibility"" should be. Arguing against Weber's classic definition, he examines the implications of responsibility as responsiveness on both the individual and international levels. By beginning with actions instead of principles and by using the methodology of legal procedure to determine responsibility, Warner introduces a new way of thinking about moral responsibility and invites reflection on the very nature of communities and states and the elusive subject matter of international relations.