Introduction: the end of the Cold War, the classical tradition, and international change / Michael W. Doyle and G. John Ikenberry -- Inventing international relations: international relations theory after 1945 / Miles Kahler -- Post-theory: the eternal return of ethics in international relations / James Der Derian -- Feminist inquiry and international relations / Jean Bethke Elshtain -- Geopolitics and change / Daniel Deudney -- Complexity, formal methods, and ideology in international studies / James DeNardo -- Realist international theory and the study of world politics / Joseph M. Grieco -- Domestic structure and international change / Matthew Evangelista -- Institution and change / Steven Weber -- Conclusion: continuity and innovation in international relations theory / G. John Ikenberry and Michael W. Doyle.