Do you think Putin just laughed at him?
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President Obama in a telephone call with Russian President Vladimir Putin told the leader that western nations were “prepared to impose additional costs on Russia” after Putin endorsed a referendum Sunday in which Crimea chose to secede from Ukraine.

Obama told Putin that the Crimea vote — more than 95 percent favored joining Russia — “violates the Ukrainian constitution and occurred under duress of Russian military intervention,” according to a White House readout of the call.

“President Obama reiterated that a diplomatic resolution cannot be achieved while Russian military forces continue their incursions into Ukrainian territory and that the large-scale Russian military exercises on Ukraine’s borders only exacerbate the tension,” the White House added.

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