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Margot Wallström, Minister for Foreign Affairs of Sweden, addresses the 2015 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) April 27, 2015 at the United Nations in New York. The NPT is a landmark international treaty whose objective is to prevent the spread of nuclear weapons and weapons technology, to promote cooperation in the peaceful uses of nuclear energy and to further the goal of achieving nuclear disarmament and general and complete disarmament. AFP PHOTO / TIMOTHY A. CLARY (Photo by Timothy A. CLARY / AFP) (Photo by TIMOTHY A. CLARY/AFP via Getty Images)