MUNICH, Germany - Ukrainian President Petro Poroshenko sharply criticized his Russian counterpart, Vladimir Putin, and said the security of Europe and the world are at stake in Ukraine.
Radio Free Europe/Radio Liberty: Ukrainian president says there is no civil war in Ukraine, only Russia’s aggression
Russian soldiers stand near a tank outside a former Ukrainian military base in Perevalnoye, near the Crimean capital Simferopol, on March 27, 2014.
