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Three trends are converging to increase prospects for a fundamental change in global nuclear policies: the failure of the existing U.S. national security strategy to stem the growing proliferation threats; a nearly simultaneous global change in executive leadership; and a developing consensus across ideological lines for a renewed commitment to the elimination of nuclear weapons. Leading U.S. presidential candidates have endorsed nuclear disarmament and numerous experts and non-governmental organizations are developing comprehensive proposals, most prominently George Shultz, Henry Kissinger, William Perry and Sam Nunn. These campaigns have created political space for officials to embrace a more ambitious agenda than most previously had. There is a greater likelihood of historic change in global nuclear policy now than at any other moment in the past 15 years.