In this March 10, 2011, file photo, then-Vice President of the United States Joe Biden, left, shakes hands with Russian Prime Minister Vladimir Putin in Moscow, Russia. (AP Photo/Alexander Zemlianichenko, File)
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In this March 10, 2011, file photo, then-Vice President of the United States Joe Biden, left, shakes hands with Russian Prime Minister Vladimir Putin in Moscow, Russia. (AP Photo/Alexander Zemlianichenko, File)
