One of the great scholars of International Relations, Hedley Bull worked within a tradition of political thought which derives from Hobbes, Hume, Grotius, and the natural lawyers. Bull not only added to this tradition, but he also demonstrated how it could become a foundation for the study of International Relations. In this book, leading scholars offer essays on each of the major aspects of his thought. The authors explore Bull's central question in International Relations—how order might exist amidst anarchy—in terms of society, order, the Third World, strategy, the contemporary system, and International Relations.