BROWSE EXPERTS AND FELLOWS
Belfer Center researchers include Harvard faculty members, project directors and other expert staff, senior fellows and fellows. They contribute frequently to outside publications, advise government officials, participate in special commissions, brief journalists and policymakers, and share research results with specialists and the public.
LEGEND: 
Fellow
Joseph S. Nye
Harvard University Distinguished Service Professor
Member of the Board, Belfer Center for Science and International Affairs
Joseph S. Nye, Jr. is University Distinguished Service Professor and former Dean of Harvard’s Kennedy School of Government.
John S. Park
Associate, Project on Managing the Atom
John S. Park is the Stanton Nuclear Security Junior Faculty Fellow at MIT. He previously directed Northeast Asia Track 1.5 projects at the U.S. Institute of Peace in Washington, D.C.
Robert Reardon
Postdoctoral Research Fellow, Project on Managing the Atom/International Security Program
Robert Reardon's research focuses on the use of coercion and positive inducements in nuclear nonproliferation policy. He also works on the effects of the innovation and diffusion of dual-use technologies on international security. Dr. Reardon holds a Ph.D. in political science from MIT.
Terence Roehrig
Research Fellow, International Security Program/Project on Managing the Atom
Terence Roehrig's research focuses on the U.S. nuclear umbrella for Japan and South Korea and extended deterrence. He is Professor of National Security Affairs and the Director of the Asia-Pacific Studies Group at the U.S. Naval War College.
Mahsa Rouhi
Associate, Project on Managing the Atom/International Security Program
Mahsa Rouhi is a Ph.D. candidate in international relations at University of Cambridge, UK. During her nuclear security fellowship, she will continue her dissertation research and writing on Iran's foreign and security policymaking, with a special focus on Iran's nuclear-related policymaking
Kevin Ryan
Director, Defense and Intelligence Project, Belfer Center for Science and International Affairs
Member, The US-Russia Initiative to Prevent Nuclear Terrorism
Board Member, Belfer Center for Science and International Affairs
Brigadier General (ret.) Kevin Ryan is Director of the Defense and Intelligence Project and a member of the Center's US-Russia Initiative to Prevent Nuclear Terrorism. A career military officer, he has extensive service in air and missile defense, intelligence, US-Russian military relations and political-military policy.
Mansour Salsabili
Research Fellow, International Security Program/Project on Managing the Atom
Mansour Salsabili is an Iranian scholar and former diplomat who participated in different aspects of the work of the United Nations (UN) in New York from UN reforms to the Non-Aligned Movement and also was a disarmament expert dealing with the Conference on Disarmament at the European office of the UN in Geneva.
Gary Samore
Executive Director for Research, Belfer Center for Science and International Affairs
Member of the Board,, Belfer Center for Science and International Affairs
Gary Samore is the Executive Director for Research at the Belfer Center. Prior to this, he served for four years as President Obama’s White House Coordinator for Arms Control and the Weapons of Mass Destruction (WMD) Terrorism, including as U.S. Sherpa for the 2010 and 2012 Nuclear Security Summits.
Ian J. Stewart
Research Fellow, International Security Program/Project on Managing the Atom
Ian Stewart is a nuclear technologies and proliferation specialist who comes to the centre from the "Project on Proliferation Procurement and Anti-Proliferation in the Private Sector" which is based at King's College, London. This project aims to identify new ways to prevent proliferation-related trade from supporting WMD programs of concern.
William H. Tobey
Senior Fellow, Belfer Center for Science and International Affairs
Prior to his appointment as a senior fellow at the Belfer Center, William Tobey was Deputy Administrator for Defense Nuclear Nonproliferation at the National Nuclear Security Administration.
