Harold Feiveson is a Senior Research Scientist Emeritus  at the Program on Science and Global Security at Princeton University.  He had co-directed the Program for 30 years.  Dr. Feiveson is co-author of  Unmaking the Bomb: A Fissile Material Approach to Nuclear Disarmament and Nonproliferation, published by MIT Press in 2014, and editor and co-author of The Nuclear Turning Point: A Blueprint for Deep Cuts and De-Alerting of Nuclear Weapons, Brookings Press 1999.