Pro-Russia rebels wearing gas masks walk inside the city hall in Mariupol, eastern Ukraine
Pro-Russia rebels wearing gas masks walk inside the city hall in Mariupol, eastern Ukraine May 7, 2014. Ukrainian forces seized the rebel-held city hall in the eastern port city of Mariupol overnight, driving out pro-Russian activists, then withdrew, making no attempt to hold onto the building, witnesses said on Wednesday. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
A pro-Russia rebel carries a Russian flag into the city hall in Mariupol, eastern Ukraine
A pro-Russia rebel carries a Russian flag into the city hall in Mariupol, eastern Ukraine May 7, 2014. Ukrainian forces seized the rebel-held city hall in the eastern port city of Mariupol overnight, driving out pro-Russian activists, then withdrew, making no attempt to hold onto the building, witnesses said on Wednesday. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
A pro-Russia rebel wearing a gas mask walks inside the city hall in Mariupol, eastern Ukraine
A pro-Russia rebel wearing a gas mask walks inside the city hall in Mariupol, eastern Ukraine May 7, 2014. Ukrainian forces seized the rebel-held city hall in the eastern port city of Mariupol overnight, driving out pro-Russian activists, then withdrew, making no attempt to hold onto the building, witnesses said on Wednesday. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
A pro-Russia rebel wearing a gas mask places a Russian flag on the balcony of the city hall in Mariupol, eastern Ukraine
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. Ukrainian forces seized the rebel-held city hall in the eastern port city of Mariupol overnight, driving out pro-Russian activists, then withdrew, making no attempt to hold onto the building, witnesses said on Wednesday. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
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