UKRAINE-RUSSIA-POLITICS-CRISIS

Pro-Russian activists gather outside the secret service building in the eastern Ukrainian city of Lugansk on April 14, 2014. Ukraine's interim president on April 14 made a dramatic about-face aimed at defusing tensions in the separatist east by backing a national referendum on turning the ex-Soviet republic into a federation with broader regional rights. AFP PHOTO / DIMITAR DILKOFF (Photo credit should read DIMITAR DILKOFF/AFP via Getty Images)