Russian President Vladimir Putin holds a news conference after a meeting with OSCE head, Swiss President Didier Burkhalter (not pictured), at the Kremlin in Moscow, May 7, 2014.
A pro-Russia rebel wearing a gas mask places a Russian flag on the balcony of the city hall in Mariupol, eastern Ukraine, May 7, 2014.
A Ukrainian flag burns outside the city hall. Overnight, Ukrainian forces seized the rebel-held city hall, driving out pro-Russian activists then withdrawing, making no attempt to hold onto the building, Mariupol, May 7, 2014.
A woman looks at a Ukrainian armored personnel carrier at a checkpoint, in Mariupol, May 7, 2014.