Pro-Russia activists guard a barricade outside the police regional building seized by the separatists in the eastern Ukrainian city of Slavyansk on April 17, 2014. Russian President Vladimir Putin on Thursday said he very much hopes that he will not have to use his "right" to send Russian military forces into Ukraine amid the intensifying crisis.  AFP PHOTO / GENYA SAVILOV (Photo by GENYA SAVILOV / AFP) (Photo by GENYA SAVILOV/AFP via Getty Images)