DONETSK, UKRAINE - APRIL 25: Pro-Russian separatists stand guard inside a barricade constructed around the Donetsk Regional Administration building following its recent takeover by the separatists on April 25, 2014 in Donetsk, Ukraine. The activists, who are occupying the building, have surrounded it with a barricade of tires and barbed wire and are prepared to defend it with caches of Molotov cocktails strategically placed around the barricade. Several bands of separatists, similar to those in Donetsk, have been occupying government buildings in other eastern Ukraine cities in recent weeks. (Photo by Scott Olson/Getty Images)