STEVEN MILLER is Director of the International Security Program, Editor-in-Chief of the quarterly journal International Security, and also co-editor of the Belfer Center Studies in International Security. Previously, he was Senior Research Fellow at the Stockholm International Peace Research Institute (SIPRI) and taught Defense and Arms Control Studies in the Department of Political Science at the Massachusetts Institute of Technology. He is a Fellow of the American Academy of Arts and Sciences, where he co-chairs their Committee on International Security Studies and co-directs the Academy’s project On the Global Nuclear Future. He is cochair of the U.S. Pugwash Committee and a member of the Council of International Pugwash.