Sergei Ryabkov

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U.S. Secretary of State John Kerry, second left, U.S. Secretary of Energy Ernest Moniz, left, British Foreign Secretary Philip Hammond, center, Russian Deputy Foreign Minister Sergei Ryabkov, second right, and German Foreign Minister Frank Walter Steinmeier wait for the start of a meeting on Iran's nuclear program with other officials from France, China, the European Union and Iran at the Beau Rivage Palace Hotel in Lausanne, Switzerland Tuesday, March 31, 2015. (AP Photo/Brendan Smialowski, Pool)