In this March 24, 2014, file photo President Barack Obama, left, and German Chancellor Angela Merkel, right, smile during a meeting with other G7 world leaders in The Hague, Netherlands. Obama and Merkel are putting on a display of trans-Atlantic unity against an assertive Russia, even as sanctions imposed by Western allies seem to be doing little to change Russian President Vladimir Putin's reasoning on Ukraine. (AP Photo/Jerry Lampen, Pool, File)
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