Colin Elman is currently engaged on a book for Cambridge University Press, Regional Hegemony: The United States and Offensive Realism, 1803-1898. The volume investigates America's rise to dominance in the Western Hemisphere. He is also working on other book and article projects on realist international relations theory, qualitative methods and the diffusion of unconventional conflict practices. Elman is (with Miriam Fendius Elman) the co-editor of Progress in International Relations Theory: Appraising the Field (MIT Press, 2003); and Bridges and Boundaries: Historians, Political S cientists, and the Study of International Relations (MIT Press, 2001); and (with John Vasquez) of Realism and the Balancing of Power: A New Debate (Prentice Hall, 2003). Elman has published articles in International Organization, International Studies Quarterly, the International History Review, the American Political Science Review, International Security, and Security Studies. He is co-founder and Secretary-Treasurer of both the International History and Politics and Qualitative Methods organized sections of the American Political Science Association, and co-founder and Executive Director or the Consortium for Qualitative Research Methods. In addition to the subjects mentioned above, Professor Elman teaches and researches on international relations theory; security studies; and comparative foreign security policy.