JOHN P. HOLDREN (NAS member), chair, is Teresa and John Heinz Professor of Environmental Policy and director of the Program in Science, Technology, and Public Policy, John F. Kennedy School of Government, and professor of Environmental Science and Public Policy in the Department of Earth and Planetary Sciences at Harvard University. He is also a member of the President's Committee of Advisors on Science and Technology, Chair of the Executive Committee of the Pugwash Conferences on Science and World Affairs, Visiting Distinguished Scientist at the Woods Hole Research Center, and a consultant to the Lawrence Livermore National Laboratory. He has written extensively on energy technology and policy, global environmental problems, and international security.

JOHN D. STEINBRUNER, vice-chair of CISAC, is a senior fellow and former director of the Foreign Policy Studies Program at the Brookings Institution. He has held faculty positions at Yale, Harvard, and Massachusetts Institute of Technology. A political scientist, he has written extensively on arms control and security issues, including problems of command and control and crisis decision making.

MAJOR GENERAL WILLIAM F. BURNS (USA, ret.), chair of the nuclear weapons study, was the ninth director of the U.S. Arms Control and Disarmament Agency and former deputy assistant Secretary of State for Political-Military Affairs. He served as the first U.S. Special Envoy to the denuclearization negotiations with states of the former Soviet Union under the Nunn-Lugar Act, and he negotiated the government-to-government agreement on HEU sales to the United