Members of the Ukrainian Interior Ministry security forces stand guard outside a trade union building in Odessa
Members of the Ukrainian Interior Ministry security forces stand guard outside a trade union building in Odessa, May 3, 2014. At least 42 people were killed in street battles between supporters and opponents of Russia in southern Ukraine that ended with pro-Russian protesters trapped in a flaming building, bringing the country closer to war. The riot in the Black Sea port of Odessa that ended in a deadly blaze in a trade union building was by far the worst incident in Ukraine since a February uprising that ended with a pro-Russian president fleeing the country. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)
A pro-Russia protester breaks a window at the governor's business premises in Donetsk, eastern Ukraine
A pro-Russia protester breaks a window at the governor's business premises in Donetsk, eastern Ukraine May 3, 2014. A couple of hundred pro-Russian protesters in the eastern city of Donetsk stormed the governor's business premises and the state security headquarters, ransacking files and smashing windows. The attack reflected growing disorder in the area, targeting as it did a security building that was already largely under rebel control. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
Woman stands next to flowers and lit candles placed in memory of people killed in recent street battles outside a trade union building in Odessa
A woman stands next to flowers and lit candles placed in memory of people killed in recent street battles outside a trade union building in Odessa, May 3, 2014. At least 42 people were killed in street battles between supporters and opponents of Russia in southern Ukraine that ended with pro-Russian protesters trapped in a flaming building, bringing the country closer to war. The riot in the Black Sea port of Odessa that ended in a deadly blaze in a trade union building was by far the worst incident in Ukraine since a February uprising that ended with a pro-Russian president fleeing the country. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)
Pro-Russia protesters storm the governor's business premises in Donetsk, eastern Ukraine
Pro-Russia protesters storm the governor's business premises in Donetsk, eastern Ukraine May 3, 2014. A couple of hundred pro-Russian protesters in the eastern city of Donetsk stormed the governor's business premises and the state security headquarters, ransacking files and smashing windows. The attack reflected growing disorder in the area, targeting as it did a security building that was already largely under rebel control. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
A pro-Russia protester storms the governor's business premises in Donetsk, eastern Ukraine
A pro-Russia protester storms the governor's business premises in Donetsk, eastern Ukraine May 3, 2014. A couple of hundred pro-Russian protesters in the eastern city of Donetsk stormed the governor's business premises and the state security headquarters, ransacking files and smashing windows. The attack reflected growing disorder in the area, targeting as it did a security building that was already largely under rebel control. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
Woman lays flowers as members of the Ukrainian Interior Ministry security forces stand guard outside a trade union building in Odessa
A woman lays flowers as members of the Ukrainian Interior Ministry security forces stand guard outside a trade union building in Odessa, May 3, 2014. At least 42 people were killed in street battles between supporters and opponents of Russia in southern Ukraine that ended with pro-Russian protesters trapped in a flaming building, bringing the country closer to war. The riot in the Black Sea port of Odessa that ended in a deadly blaze in a trade union building was by far the worst incident in Ukraine since a February uprising that ended with a pro-Russian president fleeing the country. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)
A pro-Russia protester waves a Donbass flag as they storm the governor's business premises in Donetsk
A pro-Russia protester waves a Donbass flag as they storm the governor's business premises in Donetsk, eastern Ukraine May 3, 2014. A couple of hundred pro-Russian protesters in the eastern city of Donetsk stormed the governor's business premises and the state security headquarters, ransacking files and smashing windows. The attack reflected growing disorder in the area, targeting as it did a security building that was already largely under rebel control. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
Woman argues with members of the Ukrainian Interior Ministry security forces during a rally outside a trade union building in Odessa
A woman argues with members of the Ukrainian Interior Ministry security forces during a rally outside a trade union building in Odessa, May 3, 2014. At least 42 people were killed in street battles between supporters and opponents of Russia in southern Ukraine that ended with pro-Russian protesters trapped in a flaming building, bringing the country closer to war. The riot in the Black Sea port of Odessa that ended in a deadly blaze in a trade union building was by far the worst incident in Ukraine since a February uprising that ended with a pro-Russian president fleeing the country. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)
Woman argues with members from the Ukrainian Interior Ministry security forces during a rally outside a trade union building in Odessa
A woman argues with members from the Ukrainian Interior Ministry security forces during a rally outside a trade union building in Odessa, May 3, 2014. At least 42 people were killed in street battles between supporters and opponents of Russia in southern Ukraine that ended with pro-Russian protesters trapped in a flaming building, bringing the country closer to war. The riot in the Black Sea port of Odessa that ended in a deadly blaze in a trade union building was by far the worst incident in Ukraine since a February uprising that ended with a pro-Russian president fleeing the country. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW TPX IMAGES OF THE DAY)
Members from the Ukrainian Interior Ministry security forces stand guard outside a trade union building in Odessa
Members from the Ukrainian Interior Ministry security forces stand guard outside a trade union building in Odessa, May 3, 2014. At least 42 people were killed in street battles between supporters and opponents of Russia in southern Ukraine that ended with pro-Russian protesters trapped in a flaming building, bringing the country closer to war. The riot in the Black Sea port of Odessa that ended in a deadly blaze in a trade union building was by far the worst incident in Ukraine since a February uprising that ended with a pro-Russian president fleeing the country. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)