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.

The events of September 11, 2001 have heightened concerns about the potential for terrorist actions involving nuclear or radioactive materials and facilities. Questions about the vulnerability of such materials and facilities have forced governments to implement new security measures at the national level; however, such measures are of limited value in addressing influential factors in play beyond national boundaries. The existing nuclear weapons among states, is insufficient to address this new threat. A new, broader international nuclear security regime needs to be constructed. This regime must also take into account the growing influence of sub-state, trans-national actors. A key element in this new nuclear security regime is the important role international organizations can play in shoring up the weakness of the nation-state in a chaotic, post-Cold War international environment.

Ron Stansfield is current Coordinator of International Programmes at the Canadian Nuclear Safety Commission (CNSC) in Ottawa. Mr. Stansfield has over a quarter century of experience in international security issues, including non-proliferation, arms control and disarmament. Prior to joining the CNSC in 1991 as Senior Advisor on Non-proliferation, he served as Director Parliamentary Affairs at the Canadian Department of National Defence from 1988-1989. From 1975-1988, he held several positions at the Canadian Department of Foreign Affairs and International Trade (DFAIT), including Head of the Conventional and Nuclear Arms Control Section of DFAIT's Defence Relations Division (1986-1988) and diplomatic assignments in the Netherlands (1981-1985) and South Korea (1977-1979). From 1998-2001, Mr. Stansfield was seconded to the International Atomic Energy Agency in Vienna as a Senior Policy Office for nuclear non-proliferation and safeguards issues in the Agency's Office of External Relations and Policy Coordination. Mr. Stansfield is a graduate of the University of Saskatchewan and the Norman Paterson School of International Affairs at Carleton University.

Within the last 10 years several non-proliferation programs have been realized in Uzbekistan. Those programs include actions on upgrading physical protection systems of facilities possessing nuclear reactors and powerful radioactive sources, measures on improving nuclear security and radioactive safety, equipping the country's exit/entry points in order to prevent illicit trafficking of nuclear and radioactive materials, improving safeguards and radioactive monitoring of environment. Special attention was given to conversion of research reactors to low enrichment uranium and treatment of highly enriched fresh and spent reactor fuel. The programs have been performed in cooperation with U.S. energy and defense departments, the International Atomic Energy Agency and related institutions.

Bekhzod Yuldashev is a CISAC science fellow. He served as a consultant-advisor at the International Atomic Energy Agency in 2006-2007. Prior to that, he was director-general of the Institute of Nuclear Physics of the Uzbekistan Academy of Science from 1990 to 2006. From 1984 to 1990, he served as head of the laboratory in the Physical Technical Institute in Tashkent, where he had been a senior researcher since 1972.

Yuldashev has published about 300 scientific papers dedicated to various subjects of particle and nuclear physics in the wide range of primary energies. In particular, he experimentally obtained the first evidence of dibaryon resonances, discovered the effect of emitting energetic nucleons from local subsystems in nuclei, observed anomalously high production of eta-mesons and cumulative delta-isobars on nuclei and has experimentally proven that production and decay of vector and tensor resonances are the origins of so-called leading pions with an opposite sign to the primary one in high energy interactions. He has more than 20 patents on nuclear applications.

He is a full member of the Academy of Science of Uzbekistan and served as the academy's president from September 2000 through November 2005. In 2000-2004 he was elected a Member of Parliament of the Republic of Uzbekistan, and in 2004-2005 was elected a Senator.

He is a fellow of Islamic Academy of Sciences, a member of the American Physical Society. From 1992 to 2002, he was an elected member of the Scientific Council of the Joint Institute of Nuclear Research, in Dubna, Russia, one of two international nuclear centers in the world. He is also a member of the IAEA's Standing Advisory Group for Nuclear Applications, a fellow of the Islamic Countries Academy, and foreign member of the National Academy of Kazakhstan. He is an honorary professor of Samarkand State University and honorary doctor of the Joint Institute of Nuclear Research (2004). He won the 2004 Economic Cooperation Organization's excellence award in science and technology and the 1983 Uzbekistan State Prize for Science and Technology.

Yuldashev graduated from Tashkent and Moscow Universities in 1968. He earned his PhD in physics and mathematics from the Joint Institute of Nuclear Research, Dubna, Russia, in 1971.