David A. Welch is University Research Chair and Professor of Political Science at the University of Waterloo. He teaches at the Balsillie School of International Affairs and is co-editor (with Toni Erskine and Stefano Guzzini) of International Theory. His 2005 book Painful Choices: A Theory of Foreign Policy Change (Princeton University Press) is the inaugural winner of the International Studies Association ISSS Book Award for the best book published in 2005 or 2006, and his 1993 book Justice and the Genesis of War (Cambridge University Press) is the winner of the 1994 Edgar S. Furniss Award for an Outstanding Contribution to National Security Studies. He is the author of Decisions, Decisions: The Art of Effective Decision-Making (Prometheus, 2001), and co-author of Vietnam if Kennedy had Lived: Virtual JFK (Rowman & Littlefield, 2009); The Cuban Missile Crisis: A Concise History (Oxford University Press, 2007); On the Brink: Americans and Soviets Reexamine the Cuban Missile Crisis (1st ed., Hill and Wang, 1989; 2nd ed., Noonday, 1990); and Cuba on the Brink: Castro, The Missile Crisis, and the Soviet Collapse (Pantheon, 1993; 2nd ed., Rowman & Littlefield, 2002). He is co-editor of Intelligence and the Cuban Missile Crisis (Frank Cass, 1998), and his articles have appeared in Asian Perspective, Ethics and International Affairs, Foreign Affairs, The Georgetown Journal of International Affairs, Intelligence and National Security, International Negotiation, International Security, International Journal, International Studies Quarterly, The Journal of Conflict Resolution, The Mershon International Studies Review, The Review of International Studies, and Security Studies. He received his Ph.D. from Harvard University in 1990.