Armed pro-Russia protesters prepare for the battle with Ukrainian police special team on the outskirts the eastern Ukrainian city of Slavyansk on April 13, 2014. Ukraine on Sunday launched an "anti-terrorist operation" in the eastern town of Slavyansk, where pro-Russian gunmen have seized police and security services buildings, Interior Minister Arsen Avakov said. AFP PHOTO / ANATOLIY STEPANOV        (Photo credit should read ANATOLIY STEPANOV/AFP via Getty Images)