William Potter, Center for Nonproliferation Studies, Monterey Institute of International Studies; Ambassador Peter Burian, Permanent Mission of Slovakia to the United Nations; Igor Khripunov, University of Georgia; William Tobey, U.S. Department of Energy. This session was part of the 2007 Carnegie International Nonproliferation Conference, “Tomorrow's Solutions,” June 25–26, in Washington, D.C., which addressed the critical challenges confronting the nonproliferation regime and offered policy recommendations to stop the spread and use of nuclear weapons and materials.