President Barack Obama and German Chancellor Angela Merkel walk from the Oval Office of the White House in Washington, Friday, May 2, 2014, to their joint news conference in the Rose Garden. 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/Carolyn Kaster)
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