• James Leach, Trustee, The Century Foundation; U.S. House of Representatives (1973–2007); Visiting Professor, Woodrow Wilson School of Public and International Affairs, Princeton University.
• Filippo Formica, Director, Disarmament and Non-Proliferation, Ministry of Foreign Affairs, Italy.
• Jayantha Dhanapala, former Under Secretary General, U.N. Department of Disarmament Affairs (1998–2003)

• Michael Krepon, Co-founder and President Emeritus, Henry L. Stimson Center
• Paolo Cotta-Ramusino, Secretary-General, Pugwash Conferences on Science and World Affairs
• Christopher Chyba, Director, Program on Science and Global Security, Woodrow Wilson School of Public and International Affairs, Princeton University
• Moderator: Joseph Cirincione, Senior Vice President for National Security and International Policy, Center for American Progress

• Sergio de Queiroz Duarte, President of the 2005 Nuclear Nonproliferation Treaty Review Conference
• William Potter, Director, Center for Nonproliferation Studies, Monterey Institute of International Studies
• Gustavo Zlauvinen, Director, United Nations Office, International Atomic Energy Agency
• Moderator: Jeffrey Laurenti, Senior Fellow, The Century Foundation

• Presiding: Richard C. Leone, President, The Century Foundation
• Richard Haass, President, Council on Foreign Relations
• Javad Zarif, Permanent Representative of Iran to the United Nations
• Moderator: Carla Anne Robbins, Deputy Editorial Page Editor, the New York Times

Download the Session 3 and 4 Transcripts Here.

• Hans Blix, Chair, International Commission on Weapons of Mass Destruction.
• Jayantha Dhanapala, former Under Secretary General, U.N. Department of Disarmament Affairs (1998–2003).
• Henry Sokolski, Executive Director, Nonproliferation Policy Education Center.
• Moderator: Janne Nolan, Professor and Senior Associate, The Matthew B. Ridgway Center for International Security Studies, Graduate School of Public and International Affairs at the University of Pittsburgh
• Moderator: Joseph Cirincione, Senior Vice President, Center for American Progress

The Century Foundation is grateful for the substantive contribution to this conference of Joseph Cirincione and the national security team of the Center for American Progress.