Master's degrees, National War College and University of Maryland. Formerly, held senior positions at the U.S. Congressional Research Service, State Department and Arms Control and Disarmament Agency. Since 2010, directs the Proliferation Prevention Program, Center for Strategic and International Studies (CSIS).On Board of directors for PIR Center, Bulletin of Atomic Scientists and Center for Arms Control and Non-Proliferation. Widely published. Recipient, numerous public service awards. Expertise: nuclear non-proliferation.