Kåre Aas, Ministry of Foreign Affairs, Norway; Ambassador Abdul Samad Minty, Ministry of Foreign Affairs, South Africa; George Perkovich, Carnegie Endowment for International Peace; Ashley Tellis, Carnegie Endowment for International Peace. 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.