Assistant Secretary for International Security and Nonproliferation
U.S. Department of State
Deputy Administrator for Defense Nuclear Nonproliferation
National Nuclear Security Administration, U.S. Department of Energy
Principal Deputy Assistant Secretary for Global Strategic Affairs
U.S. Department of Defense
Director, Natural Resources and Environment
U.S. Government Accountability Office
Vice President, Nuclear Materials Security Program
Nuclear Threat Initiative
U.S. Senate Committee on Homeland Security & Governmental Affairs
340 Dirksen Senate Office Building Washington, DC, 20510
(202) 224-2627