U.S. Secretary of State Hilary Rodham Clinton, second left, and Poland's Foreign Minister Radek Sikorski, third left, applaud as documents are exchanged after the signing of a protocol adjusting a 2008 missile defense agreement to meet its new shape decided by the Obama administration, in Krakow, Poland, on Saturday, July 3, 2010. (AP Photo/Czarek Sokolowski)
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