Today we explore the history of nuclear disarmament with Zia Mian. Zia is a physicist and co-director of Princeton's Program on Science and Global Security, part of the School of Public and International Affairs, where he has worked since 1997. His research interests include issues of nuclear arms control, nonproliferation and disarmament, and international peace and security. Zia is co-editor of the journal Science & Global Security, and he is the co-author of Unmaking the Bomb, published by MIT Press in 2014. He is also co-chair of the International Panel on Fissile Materials. Zia received the 2014 Linus Pauling Legacy Award for "his accomplishments as a scientist and as a peace activist in contributing to the global effort for nuclear disarmament and for a more peaceful world." He also received the American Physical Society's 2019 Leo Szilard Award "for promoting global peace and nuclear disarmament". In 2021, Zia was elected a Fellow of the American Physical Society for "promoting global nuclear risk reduction and disarmament."