This book examines the concepts of international law and international relations as they are developed in the social and political philosophy of G.W.F. Hegel. It considers traditional as well as contemporary criticisms of Hegel's views. It develops a "Hegelian" theory of international justice and a "Hegelian" conception of world order designed to accommodate both (a) the ethical value of, and differences among, national communities, and (b) the ethical value of individual freedom, and the equal entitlement of all individuals to the basic rights of freedom. Hegel's controversial views on war and state sovereignty are also discussed, and the author attempts to show why these views do notundermine Hegel's basic internationalist and universalist aspirations. Despite Hegel's resistance to the potential abstractness and unmediated citizenship which a comprehensive (Kantian/cosmopolitan) theory of international law promises, his political philosophy ends with a vision of a single modern social world - a world in which peoples and nation - states can co-exist under conditions of peace, justice, mutual respect, and prosperity. In this regard, Hegel's understanding of social membership is shown to be far more universalistic than is often supposed by either his liberal cosmopolitan critics or his communitarian defenders.