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.
A Ukrainian soldier talks to a man at a checkpoint near the town of Slovyansk, May 7, 2014.