UKRAINE-RUSSIA-CRISIS-POLITICS-SLAVYANSK

Men wearing military fatigues stand guard outside the regional state building seized by pro-Russian separatists in the eastern Ukrainian city of Slavyansk on April 16, 2014. At least two Ukrainian military helicopters landed in an airfield near the flashpoint city of Slavyansk on April 15 with reinforcements for an ongoing push into the separatist-held city, witness told AFP. The helicopters landed in a military airfield in the town of Kramatorsk, about 15 kilometres (nine miles) south of Slavyansk, where pro-Kremlin militias have occupied government buildings since Saturday. AFP PHOTO /GENYA SAVILOV (Photo credit should read GENYA SAVILOV/AFP via Getty Images)