SLOVYANSK, UKRAINE - APRIL 24: A ferris wheel is visible behind houses on April 24, 2014 in Slovyansk, Ukraine. Pro-Russian activists have been occupying government buildings and demanding greater autonomy in many Eastern Ukrainian cities in recent weeks, in particular Slovyansk, prompting the government in Kiev to threaten military action to retake control of the cities. (Photo by Brendan Hoffman/Getty Images)