A woman looks on as pro-Russians rally in front of a barricade outside the headquarters of Ukraine's security agency building in the eastern Ukrainian city of Lugansk on April 12, 2014. Separatists demanding a referendum to join Russia seized the building a week ago as a wave of secessionist anger swept eastern Ukraine, whose mainly Russian-speaking population feels under threat from a new pro-Western government in Kiev.  AFP PHOTO / DIMITAR DILKOFF        (Photo credit should read DIMITAR DILKOFF/AFP/Getty Images)