Former Director, Center for Science and International Affairs, Harvard and Chairman, Editorial Board, International Security. 1993-96, Assistant Secretary of Defense for International Security Policy, responsible for national security concerning the states of the former Soviet Union, arms control, countering proliferation worldwide, and oversight of the US nuclear arsenal and missile defence programmes. Currently, Ford Foundation Professor of Science and International Affairs, Harvard and Co-Director, Harvard-Stanford Preventive Defense Project. Consultant: Goldman Sachs; MITRE Corporation on international affairs and technology matters. Senior Partner, Global Technology Partners. Member of the Advisory Board: MIT Lincoln Laboratories; the Draper Laboratory Corporation. Member of the Board of Directors, Mitretek Systems. Member, Council on Foreign Relations. Fellow, American Academy of Arts and Sciences. Co-author of Preventive Defense: A New Security Strategy for America. Expertise/interests: foreign an defense policy, especially Russia, China, North Korea; proliferation; terrorism; nuclear weapons.