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Photo by: Kayhan Ozer

Turkish Prime Minister Recep Tayyip Erdogan (right) and U.S. Secretary of State John F. Kerry shake hands before a meeting in Istanbul on Sunday, April 7, 2013. Mr. Kerry will coordinate with Mr. Erdogan and other Turkish officials on efforts to halt the violence in neighboring Syria's civil war. (AP Photo/Kayhan Ozer, Turkish Prime Minister's Press Office)

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