Associate Deputy Assistant Secretary for International Nuclear Energy Policy and Cooperation, Office of Nuclear Energy
U.S. Department of Energy
Sarah G.J. Lennon serves as the Associate Deputy Assistant Secretary for International Nuclear Energy Policy and Cooperation in the U.S. Department of Energy Office of Nuclear Energy (NE). She simultaneously is serving as the Director, Office of Bilateral, Multilateral and Commercial Cooperation. In this capacity, she manages NE’s engagement with relevant domestic and foreign partners to support U.S. international and commercial cooperation in the civil nuclear energy field as well as a newly created nuclear safety office. Before being selected as Director, Lennon was the first-ever liaison to NE from the Office of Defense Nuclear Nonproliferation to enhance coordination and communication among relevant DOE offices on issues relating to reducing the risks of proliferation and terrorism in an environment of expansion of nuclear energy. Lennon was originally recruited to DOE from the Department of Defense to serve as former-Secretary Bill Richardson’s Special Assistant for Russia. She has served at the U.S. Department of State as Senior Advisor to then-Assistant Secretary for Arms Control, Verification, and Compliance, Rose Gottemoeller, and she was the Chief of the WMD-Terrorism Group in the National Counterterrorism Center’s Directorate for Strategic Operational Planning. Lennon entered government service as a Presidential Management Fellow and worked as a Fissile Material Specialist in the Office of the Secretary of Defense’s Cooperative Threat Reduction program; there her portfolio included work with the countries of the former Soviet Union to reduce the threat of nuclear proliferation following the collapse of the Soviet Union. She was selected as a Brookings Institution LEGIS Fellow and has served as the national security staffer for former Senator Jean Carnahan. Lennon holds a B.A. from Dartmouth College and an M.A. from the Monterey Institute of International Affairs, where she specialized in Russian and nonproliferation. She has also earned a Diploma in Translation in Russian from the Institute of Linguists Educational Trust of the United Kingdom. Lennon has traveled extensively, and in addition to Russian, knows French, Swedish and Spanish.