Scott D. Sagan is Co-Director and Senior Fellow at the Center for International Security and Cooperation, the Caroline S.G. Munro Professor of Political Science, and the Bass University Fellow in Undergraduate Education at Stanford University. He also serves as Co-Chair of the American Academy of Arts and Sciences’ Committee on International Security Studies. Before joining the Stanford faculty, Sagan was a lecturer in the Department of Government at Harvard University and served as special assistant to the director of the Organization of the Joint Chiefs of Staff in the Pentagon.

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: An Enduring Debate (W.W. Norton, 2012). He is the co-editor of Insider Threats (Cornell University Press, 2017) with Matthew Bunn; and co-editor of The Fragile Balance of Terror (Cornell University Press, 2022) with Vipin Narang. Sagan was also the guest editor of a two-volume special issue of Daedalus: Ethics, Technology, and War (Fall 2016) and The Changing Rules of War (Winter 2017).

Recent publications include “Creeds and Contestation: How US Nuclear and Legal Doctrine Influence Each Other,” with Janina Dill, in a special issue of Security Studies (December 2025); “Kettles of Hawks: Public Opinion on the Nuclear Taboo and Noncombatant Immunity in the United States, United Kingdom, France, and Israel”, with Janina Dill and Benjamin A. Valentino in Security Studies (February 2022); “The Rule of Law and the Role of Strategy in U.S. Nuclear Doctrine” with Allen S. Weiner in International Security (Spring 2021); “Does the Noncombatant Immunity Norm Have Stopping Power?” with Benjamin A. Valentino in International Security (Fall 2020); and “Just War and Unjust Soldiers: American Public Opinion on the Moral Equality of Combatants” and “On Reciprocity, Revenge, and Replication: A Rejoinder to Walzer, McMahan, and Keohane” with Benjamin A. Valentino in Ethics & International Affairs (Winter 2019).

In 2022, Sagan was awarded Thérèse Delpech Memorial Award from the Carnegie Endowment for International Peace at their International Nuclear Policy Conference. In 2017, he received the International Studies Association’s Susan Strange Award which recognizes the scholar whose “singular intellect, assertiveness, and insight most challenge conventional wisdom and intellectual and organizational complacency" in the international studies community. Sagan was also the recipient of the National Academy of Sciences William and Katherine Estes Award in 2015, for his work addressing the risks of nuclear weapons and the causes of nuclear proliferation. The award, which is granted triennially, recognizes “research in any field of cognitive or behavioral science that advances understanding of issues relating to the risk of nuclear war.” In 2013, Sagan received the International Studies Association's International Security Studies Section Distinguished Scholar Award. He has also won four teaching awards: Stanford’s 1998-99 Dean’s Award for Distinguished Teaching; Stanford's 1996 Hoagland Prize for Undergraduate Teaching; the International Studies Association’s 2008 Innovative Teaching Award; and the Monterey Institute for International Studies’ Nonproliferation Education Award in 2009.     

David Holloway is the Raymond A. Spruance Professor of International History, a professor of political science, and an FSI senior fellow. He was co-director of CISAC from 1991 to 1997, and director of FSI from 1998 to 2003. His research focuses on the international history of nuclear weapons, on science and technology in the Soviet Union, and on the relationship between international history and international relations theory. His book Stalin and the Bomb: The Soviet Union and Atomic Energy, 1939-1956 (Yale University Press, 1994) was chosen by the New York Times Book Review as one of the 11 best books of 1994, and it won the Vucinich and Shulman prizes of the American Association for the Advancement of Slavic Studies. It has been translated into seven languages, most recently into Chinese. The Chinese translation is due to be published later in 2018. Holloway also wrote The Soviet Union and the Arms Race (1983) and co-authored The Reagan Strategic Defense Initiative: Technical, Political and Arms Control Assessment (1984). He has contributed to the Bulletin of the Atomic Scientists, Foreign Affairs, and other scholarly journals.

Since joining the Stanford faculty in 1986 -- first as a professor of political science and later (in 1996) as a professor of history as well -- Holloway has served as chair and co-chair of the International Relations Program (1989-1991), and as associate dean in the School of Humanities and Sciences (1997-1998). Before coming to Stanford, he taught at the University of Lancaster (1967-1970) and the University of Edinburgh (1970-1986). Born in Dublin, Ireland, he received his undergraduate degree in modern languages and literature, and his PhD in social and political sciences, both from Cambridge University.

Stephen Stedman is a Senior Fellow at the Freeman Spogli Institute for International Studies (FSI) and the Center on Democracy, Development and the Rule of Law (CDDRL), an affiliated faculty member at CISAC, and professor of political science (by courtesy) at Stanford University. He is director of CDDRL's Fisher Family Honors Program in Democracy, Development and Rule of Law, and will be faculty director of the Program on International Relations in the School of Humanities and Sciences effective Fall 2025.

In 2011-12 Professor Stedman served as the Director for the Global Commission on Elections, Democracy, and Security, a body of eminent persons tasked with developing recommendations on promoting and protecting the integrity of elections and international electoral assistance. The Commission is a joint project of the Kofi Annan Foundation and International IDEA, an intergovernmental organization that works on international democracy and electoral assistance.

In 2003-04 Professor Stedman was Research Director of the United Nations High-level Panel on Threats, Challenges and Change and was a principal drafter of the Panel’s report, A More Secure World: Our Shared Responsibility.

In 2005 he served as Assistant Secretary-General and Special Advisor to the Secretary- General of the United Nations, with responsibility for working with governments to adopt the Panel’s recommendations for strengthening collective security and for implementing changes within the United Nations Secretariat, including the creation of a Peacebuilding Support Office, a Counter Terrorism Task Force, and a Policy Committee to act as a cabinet to the Secretary-General.

His most recent book, with Bruce Jones and Carlos Pascual, is Power and Responsibility: Creating International Order in an Era of Transnational Threats (Washington DC: Brookings Institution, 2009).