Jasen Castillo is an Associate Political Scientist at the RAND Corporation, where his research focuses on weapons proliferation and security cooperation. Before joining RAND , he was a Consultant at the Institute for Defense Analyses, working on military readiness and models of urban conflict. Dr. Castillo has received research support from the National Science Foundation and the Smith Richardson Foundation. His doctoral dissertation examined the reasons why armies differ in their staying power. Currently, Dr. Castillo is undertaking two research projects: one on the domestic and organizational sources of an army's will to fight, and another on the conditions under which deterrent threats might fail to dissuade rogues states from transferring nuclear weapons to terrorists.

William Rosenau is a political scientist in the RAND Corporation's Washington Office, where he specializes in the study of political violence, intelligence, and military special operations. He has served as senior policy advisor in the State Department's counter-terrorism office; in the office of the assistant secretary of defense for special operations and low-intensity conflict; and in the National Security Program at Harvard's John F. Kennedy School of Government. Dr. Rosenau is the author of Insurgency, Subversion, and Public Order: The American Struggle for Internal Security in South Vietnam, 1954-1963 (2005). His RAND publications include Confronting the Enemy Within: Security Intelligence, Police, and Counterterrorism in Four Democracies (2004); and Trends in Outside Support to Insurgent Movements (2001).

R. Scott Moore is a Senior Policy Analyst and Division Chief at the Defense Threat Reduction Agency, where he directs studies into new concepts related to counterproliferation, terrorism, and national security. As a Marine, he served in conflict and peace operations in the Persian Gulf, Latin America, the Far East , and the Balkans. He served on the faculty of the Political Science Department at the U.S. Naval Academy and recently taught courses in terrorism at George Mason University . Colonel Moore is currently writing his doctoral dissertation in Conflict Analysis and Resolution at George Mason University
Jo Husbands is Director of the Committee on International Security and Arms Control of the U.S. National Academy of Sciences (NAS). She also served as the Director of the Development, Security, and Cooperation Division in the NAS Office of International Affairs. Previously, she was Director of the Academy's Project on Democratization and a Senior Research Associate for its Committee on International Conflict and Cooperation. Before joining the NAS, Dr. Husbands was Deputy Director of the Committee for National Security, a Washington, DC-based nongovernmental organization. She is a member of the Advisory Board of Women In International Security and a Fellow of the International Union of Pure and Applied Chemistry. Dr. Husbands has published widely on the topics of arms control, arms transfers, weapons proliferation, and international negotiations.

Bernard Harborne is a Lead Conflict Specialist (Africa) with the World Bank, where he is the policy/programme lead for conflict-related operations in sub-Saharan Africa . Before joining the World Bank, Mr. Harborne was a Senior Conflict Adviser (Africa) for the Department for International Development in London . He has also worked with the UN as the Head of UN Coordination Unit, OCHA/UNDP Somalia and IDP Officer, UN OCHA, Operation Lifeline Sudan .

Bernard Finel is Professor of Military Strategy and Operations at the U.S. National War College. He was Executive Director of the Security Studies Program and the Center for Peace and Security Studies at Georgetown University from 2002 to 2004 and Associate Director of the SSP from 1997 to 2001 as well as a member of the core faculty of the program from 1997 to 2004. Dr. Finel's research focuses on use of force issues, weapons proliferation, international transparency, and international relations theory. Dr. Finel served on the governing council of the International Security Studies Section of the International Studies Association from 1999 to 2002, and is a Term Member of the Council on Foreign Relations and a member of the International Institute for Strategic Studies ( London ). Dr. Finel's work has been published in numerous journals, including Aerospace Power Journal, International Studies Quarterly, Security Studies, and International Security. He is co-editor and co-author of
Power and Conflict in the