Pro-Russian activists block a collumn of Ukrainian men riding on Armoured Personnel Carriers in the eastern Ukrainian city of Kramatorsk on April 16, 2014. Ukraine's security service said on April 16 it had intercepted communications showing that Russian commanders in the separatist east had issued pro-Kremlin militants “shoot-to-kill” orders after Kiev launched an operation to oust them. (Photo by Anatoliy Stepanov/AFP Photo)
