Scott Sagan (speaker) is a professor of political science and co-director of Stanford's Center for International Security and Cooperation. Before joining the Stanford faculty, Sagan was a lecturer in the Department of Government at Harvard University and served as a special assistant to the director of the Organization of the Joint Chiefs of Staff in the Pentagon. He has also served as a consultant to the office of the Secretary of Defense and at the Sandia National Laboratory and the Los Alamos National Laboratory. Sagan is the author of Moving Targets: Nuclear Strategy and National Security (Princeton University Press, 1989), The Limits of Safety: Organizations, Accidents, and Nuclear Weapons (Princeton University Press, 1993), and with co-author Kenneth N. Waltz, The Spread of Nuclear Weapons: A Debate Renewed (W.W. Norton, 2002). He is the co-editor of Peter R. Lavoy, Scott D. Sagan, and James L. Wirtz, Planning the Unthinkable (Cornell University Press, 2000). Sagan was the recipient of Stanford University's 1996 Hoagland Prize for Undergraduate Teaching and the 1998 Dean's Award for Distinguished Teaching. As part of CISAC's mission of training the next generation of security specialists he and Stephen Stedman founded Stanford's Interschool Honors Program in International Security Studies in 2000. His recent articles include "How to Keep the Bomb From Iran," in Foreign Affairs (September-October 2006); "The Madman Nuclear Alert: Secrecy, Signaling, and Safety in October 1969" co-written by Jeremi Suri and published in International Security in spring 2003; and "The Problem of Redundancy Problem: Will More Nuclear Security Forces Produce More Nuclear Security?" published in Risk Analysis in 2004. In addition to these works, Sagan is also finishing a collection of essays for a book tentatively entitled Inside Nuclear South Asia.

Paul Kapur (discussant) is a visiting professor at CISAC, on leave from the U.S. Naval War College, where he is an associate professor in the Department of Strategic Research. Before joining the War College in 2006, Kapur was visiting professor at CISAC and assistant professor of Government at Claremont McKenna College. He also served as a postdoctoral fellow at the University of Chicago, where he received his PhD in political science. His research interests include the strategic effects of nuclear weapons proliferation, deterrence theory, and the international security environment in South Asia. Kapur is author of Dangerous Deterrent: Nuclear Weapons Proliferation and Conflict in South Asia (Stanford University Press, 2007). His work has also appeared in journals such as International Security, Security Studies, Asian Survey, and Asian Security.