KHARKIV, UKRAINE - APRIL 24: A police officer watches pro-Russian separatists holding a rally outside from a window in the regional administration building on April 24, 2014 in Kharkiv, Ukraine. The legislative body for the Kharkiv region, which was holding a session, was urged by pro-Russian protesters to schedule a referendum on greater autonomy from the central government in Kiev. (Photo by Brendan Hoffman/Getty Images)
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