SLOVYANSK, UKRAINE - APRIL 26:  A pro-Russian militant is interviewed by Bulgarian journalists as he stands guard outside the Ukraine Security Service building on April 26, 2014 in Slovyansk, Ukraine. Yesterday pro-Russian militants in eastern Ukraine took several military observers from the Organization for Security and Cooperation in Europe (OSCE) hostage. Several bands of pro-Russian activists, similar to those in Slovyansk, have been occupying government buildings and manning highway roadblocks in many towns in Eastern Ukraine.  (Photo by Scott Olson/Getty Images)