Theory and Meta Theory in International Relations (New York: Palgrave MacMillan, 2007)
The Power of International Theory (London: Routedge, 2005)
After Bipolarity: Theories of Cooperation, The Diminishing Threat, and The Future of the Atlantic Alliance (Ann Arbor: University of Michigan Press,1995)
Arms Control and the Arms Race, coedited with Bruce Russett (San Francisco:WH Freeman, 1985)
Articles in International Studies Quarterly, Review of International Studies, Millenium, International Affairs, Journal of Conflict Resolution, European Journal of International Relations, International Studies Review, Strategic Review, International Studies Perspectives, Defence Analysis, International Relations; philosophical articles in Analysis, Mind, and Philosophical Quarterly.