Jon B. Wolfsthal

Adjunct Senior Fellow, Transatlantic Security Program

Research Areas

Jon B. Wolfsthal is senior advisor to Global Zero, serves on the Science and Security Board of the Bulletin of the Atomic Scientists, and is a member of the US Department of State’s International Security Advisory Board.

Before 2017, Mr. Wolfsthal served as Special Assistant to President of the United States Barack Obama for National Security Affairs and is a former senior director at the National Security Council for arms control and nonproliferation. He also served from 2009-2012 as Special Advisor to Vice President Joseph R. Biden for nuclear security and nonproliferation and as a director for nonproliferation on the National Security Council.

During his government service, Mr. Wolfsthal has been involved in almost every aspect of U.S. nuclear weapons, deterrence, arms control, and nonproliferation policy. He helped negotiate and secure the ratification of the New START arms reduction agreement with the Russian Federation, helped develop nuclear policy including through the 2010 Nuclear Posture Review. He has worked on efforts to secure vulnerable nuclear materials, helped guide U.S. nuclear weapons targeting and deterrent policies, and supported efforts to prevent the acquisition and use of nuclear weapons by North Korea and Iran. He also served as a career civil servant at the U.S. Department of Energy from 1995-1999 in a variety of capacities, including the on-site nuclear monitor at Yongbyon, North Korea during 1995-96.

Aside from his government work, Wolfsthal has served as Deputy Director of the James Martin Center for Nonproliferation Studies at the Middlebury Institute for International Studies in Monterey. He has also been a senior fellow at the Center for Strategic and International Studies and was deputy director for nonproliferation at the Carnegie Endowment for International Peace.

With Joseph Cirincione, he is the author of Deadly Arsenals: Tracking Weapons of Mass Destruction and a leading authority on nuclear weapons policy, regional proliferation, arms control and nuclear deterrence. He is author of the Trillion Dollar Nuclear Triad, and the editor of the Nuclear Status Report. He is the author of dozens of scholarly articles, reports and scores of op-eds and published thought pieces, and has appeared on or been quoted in most leading domestic and international news media outlets (New York Times, Washington Post, The Economist, CNN, NPR. BBC, CBC, VOA, etc).

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