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Key Staff:
Lesley McNiesh
FMWG Coordinating Director

The FMWG Steering Committee is comprised of the following professionals:
  • Kenneth N. Luongo, President, Partnership for Global Security (co-chair)
  • Miles Pomper, Senior Research Associate, James Martin Center for Nonproliferation Studies (co-chair)
  • Irma Arguello, Founder and Chair, NPSGlobal Foundation
  • Andrew Bieniawski, Vice President, Material Security and Minimization, Nuclear Threat Initiative
  • Matthew Bunn, Co-Principal Investigator, Project on Managing the Atom, Harvard University
  • Kingston Reif, Director for Disarmament and Threat Reduction Policy, Arms Control Association
  • Jennifer Smyser, Director of Policy Programming Strategy, The Stanley Foundation
  • Sharon Squassoni, Director and Senior Fellow, Proliferation Prevention Program, Center for Strategic and International Studies
  • Benn Tannenbaum, Non-Resident Fellow, Center for Science, Technology, and Security Policy, American Association for the Advancement of Science
  • Paul Walker, Director, Security & Sustainability, Global Green USA


The Fissile Materials Working Group (FMWG) is a non-governmental coalition of 80 organizations from around the world that are committed to improving fissile material security through the development of actionable policy proposals and advocacy for government adoption and implementation of improved policies. 

The FMWG has been a forceful presence in support of improved fissile material security and the prevention of nuclear terrorism. Important milestones for the FMWG include:

These activities highlight the urgency of this agenda and engage a broad array of international stakeholders. Please click here for a summary of the FMWG's activities to date. To view the FMWG's condensed work plan, please click here.

The Working Group is comprised of the following organizations:
American Association for the Advancement of Science | Arms Control Association | Bulletin of the Atomic Scientists | Cato Institute | Center for Arms Control and Non-Proliferation | Center for International Trade and Security, University of Georgia | Center for Political-Military Analysis, Hudson Institute | Center for Strategic and International StudiesCitizens for Global Solutions  | Citizens to Stop Nuclear TerrorismCouncil for a Livable World | Federation of American Scientists | First Watch International | Friends Committee on National Legislation | Fund for Peace | Global Green USA | The Henry L. Stimson Center | The Howard H. Baker Jr. Center for Public Policy | James Martin Center for Nonproliferation Studies, Monterey Institute of International Studies | National Security Network | Natural Resources Defense Council | Nuclear Proliferation Prevention Project, University of Texas | Nuclear Policy Program, Carnegie Endowment for International Peace | Nuclear Threat Initiative | Partnership for a Secure America | Partnership for Global Security | Peace Action | Physicians for Social Responsibility | Program on Science and Global Security, Princeton University | Project on Government Oversight | Project on Managing the Atom, Harvard University's Belfer Center for Science and International Affairs | ReThink Media | Security Studies Program, Massachusetts Institute of Technology | The Stanley Foundation | Union of Concerned Scientists | U.S.-Korea Institute at Johns Hopkins School of Advanced International Studies | Women's Action for New Directions
The Fissile Materials Working Group is proud to call the following organizations its International Partners:
Ahmadu Bello University (Nigeria) | AN & Associates (Sweden) | Analytical Center for Nonproliferation (Russia) | Arab Institute for Security Studies (Jordan) | The Asan Institute for Policy Studies (Republic of Korea) | Austrian Institute for International Affairs (Austria) | Canadian Centre for Treaty Compliance (Canada) | Centre for Conflict and Security Law, Utrecht University (Netherlands) | Centre for Economics and Foreign Policy Studies (Turkey) | Center for Energy and Security Studies (Russia) | Center for Foreign Policy and Regional Studies (Vietnam) | Center for international security studies at MEF University (Turkey) | Center for the Promotion of Disarmament and Nonproliferation (Japan) | Center for Security Studies (Taiwan) | Centre for Science and Security Studies, King's College London (United Kingdom) | Centro Ecuatoriano Estudios Internacionales (Ecuador) | Chatham House, International Security Research Department (United Kingdom) | China Arms Control and Disarmament Association (China) | Civil Council on Defense and Security (Georgia) | Danish Institute for International Studies (Denmark) | Forum on Climate Change and Energy Policy (Republic of Korea) | Geneva Centre for Security Policy (Switzerland) | Georgian Institute of Public Affairs School of Law and Politics (Georgia) | IKV Pax Christi (Netherlands) | Institute of Advance Studies (Chile) | Institute for Security Studies (South Africa) | Institute for Strategic Studies (India) | International Affairs and Foreign Policy Institute (Spain) |  International Institute for Strategic Studies (United Kingdom) | International Network of Emerging Nuclear Specialists (United Kingdom) | International Science and Technology Center (Russia) | Korea National Diplomatic Academy (Republic of Korea) | Netherlands Institute of International Relations Clingendael (Netherlands) | Nord-Sud Ventures (Algeria) | NPSGlobal Foundation (Argentina) | Proyecto Latinoamericano de Asuntos Nucleares (Colombia) | The Russian Center for Policy Studies (Russia) | Russian Strategic Nuclear Forces Project (Russia) | S. Rajaratnam School of International Studies (Singapore) | School of Politics and International Relations, Australia National University (Australia) | South Asian Strategic Stability Institute (United Kingdom) | University of Antwerp (Belgium) | University of Kabangsaan (Malaysia) | Vienna Center for Disarmament and Non-Proliferation (Austria)