Senior Fellow with the Arms Control and Non-Proliferation Initiative and the Center for 21st Century Security and Intelligence; Brookings Institution (former Assistant Secretary for Non-Proliferation of the U.S. Department of State)
Senior Fellow, Foreign Policy Program at Brookings Institution (former Assistant Secretary for Non-Proliferation of the U.S. Department of State, former Senior Adviser in the International Security Program of the Center for Strategic and International Studies (CSIS), USA). Before coming to CSIS, he served in the U.S. government for 29 years.
November 1999 - August 2001 - Assistant Secretary for Nonproliferation at the Department of State, (field of responsibility - nonproliferation of nuclear, chemical, and biological weapons, missile delivery systems, and advanced conventional arms). 1992 - 1999 - Deputy Assistant Secretary for Nonproliferation in the State Department's Political-Military Bureau. 1986 - 1992 - Senior Adviser in the Department's Policy Planning Staff. 1982 to 1986 - ACDA representative in the START talks. 1972 - 1984 - Served at the U.S. Arms Control and Disarmament Agency (ACDA), dealt with strategic arms issues, nuclear testing limits, chemical and biological weapons constraints, nonproliferation, and other security issues.