Ukrainian army soldiers perform a weapons exercise at a training ground outside Lviv, western Ukraine, Thursday, February 5, 2015. The Ukrainian government is anxious to use Thursday's visit by U.S. Secretary of State John Kerry to Kiev to reiterate its plea for lethal aid. President Barack Obama has opposed the idea of sending weapons to Ukraine but sources in his administration say this position could change in the light of recent events. (Photo by Pavlo Palamarchuk/AP Photo)
