Kuzmenko a pro-Russian rebel commander, stands with other armed rebels outside the town hall in Mariupol
Denis Kuzmenko, a pro-Russian (C) rebel commander, stands with other armed rebels outside the town hall in Mariupol, eastern Ukraine May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
An armed pro-Russian rebel stands guard outside the town hall in Mariupol
An armed pro-Russian rebel stands guard outside the town hall in Mariupol, eastern Ukraine May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
Armed pro-Russian rebels stand guard outside the town hall in Mariupol
Armed pro-Russian rebels stand guard outside the town hall in Mariupol, eastern Ukraine May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
Armed pro-Russian rebels stand guard outside the town hall in Mariupol
Armed pro-Russian rebels stand guard outside the town hall in Mariupol, eastern Ukraine May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
Kuzmenko, a pro-Russian rebel commander, talks to locals outside the town hall in Mariupol
Denis Kuzmenko, a pro-Russian (2nd R) rebel commander, talks to locals outside the town hall in Mariupol, eastern Ukraine May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Marko Djurica (UKRAINE - Tags: POLITICS CIVIL UNREST)
Participants of a rally attack a city police department as they demand the release of people arrested after recent street battles between pro-Russian and pro-Ukrainian supporters in the Black Sea port of Odessa
Participants of a rally attack a city police department as they demand the release of people arrested after recent street battles between pro-Russian and pro-Ukrainian supporters in the Black Sea port of Odessa, May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)
Ukrainian Interior Ministry security forces members block participants of a rally outside a city police department in Odessa
Ukrainian Interior Ministry security forces members block participants of a rally outside a city police department in the Black Sea port of Odessa, May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)
Ukrainian Interior Ministry security forces members block participants of a rally outside a city police department in Odessa
Ukrainian Interior Ministry security forces members block participants of a rally outside a city police department in the Black Sea port of Odessa, May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST CRIME LAW)
Ukrainian Interior Ministry security forces members block participants of a rally outside a city police department in Odessa
Ukrainian Interior Ministry security forces members block participants of a rally outside a city police department in the Black Sea port of Odessa May 4, 2014. Ukrainian Prime Minister Arseny Yatseniuk accused Russia on Sunday of engineering clashes in Odessa that led to the deaths of more than 40 pro-Russian activists in a blazing building and pushed the country closer to civil war. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS CIVIL UNREST)
Pro-Russian activists attack police station in Ukraine's Odessa
UKRAINE-CRISIS/ODESSA-ATTACKS (URGENT):Pro-Russian activists attack police station in Ukraine's Odessa