Obama says Russia may face new sanctions . The U.S. and Europe have imposed a series of economic penalties on Moscow over its actions in Ukraine since the ouster last month of pro-Moscow President Viktor Yanukovych. Conflicting reports on Ukrainian soldiers switching sides . Some locals gathered near Kramatorsk airfield Tuesday evening to see for themselves what was going on -- and to voice their unhappiness over the actions of the interim government in Kiev , which took power after pro-Russian President Viktor Yanukovych was ousted following weeks of street protests . Russian President Vladimir Putin warns Ukraine is `` on the brink of civil war ''
Obama says Russia may face new sanctions . The U.S. and Europe have imposed a series of economic penalties on Moscow over its actions in Ukraine since the ouster last month of pro-Moscow President Viktor Yanukovych. Conflicting reports on Ukrainian soldiers switching sides . Russian President Vladimir Putin warns Ukraine is `` on the brink of civil war ''