US President Barack Obama watches as Croatian Prime Minister Jadranka Kosor picks up her bag after posing for a photo before a dinner at the US Ambassadors residence in Prague on April 8, 2010. Obama and his Russian counterpart Dmitry Medvedev signed a landmark treaty committing their nations to major nuclear arms cuts. Under the new Strategic Arms Reduction Treaty (START), the former Cold War foes will be allowed a maximum of 1,550 deployed warheads, about 30 percent lower than a limit set in 2002. It also imposes limits on the air and submarine-borne intercontinental ballistic missiles that carry warheads. AFP PHOTO/Jewel SAMAD
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