A protester walks past a burning pro-Russian tent camp near the trade union building in Odessa
REFILE - CORRECTING BYLINE A protester walks past a burning pro-Russian tent camp near the trade union building in Odessa May 2, 2014. At least 38 people were killed in a fire on Friday in the trade union building in the centre of Ukraine's southern port city of Odessa, regional police said. REUTERS/Yevgeny Volokin (UKRAINE - Tags: POLITICS CIVIL UNREST)
A protester walks past a burning pro-Russian tent camp near the trade union building in Odessa
A protester walks past a burning pro-Russian tent camp near the trade union building in Odessa May 2, 2014. At least 38 people were killed in a fire on Friday in the trade union building in the centre of Ukraine's southern port city of Odessa, regional police said. REUTERS/Stringer (UKRAINE - Tags: POLITICS CIVIL UNREST)
Dozens die in Odessa blaze, rebels down Ukraine helicopters
UKRAINE-CRISIS/ (WRAPUP 10, PIX, TV):WRAPUP 10-Dozens die in Odessa blaze, rebels down Ukraine helicopters
A protester throws a petrol bomb at the trade union building in Odessa
A protester throws a petrol bomb at the trade union building in Odessa May 2, 2014. At least 38 people were killed in a fire on Friday in the trade union building in the centre of Ukraine's southern port city of Odessa, regional police said. REUTERS/Yevgeny Volokin (UKRAINE - Tags: POLITICS CIVIL UNREST)
A protester wearing a Ukrainian flag walks past a burning tent camp and a fire in the trade union building in Odessa
A protester walks past a burning tent camp and a fire in the trade union building in Odessa May 2, 2014. At least 38 people were killed in a fire on Friday in the trade union building in the centre of Ukraine's southern port city of Odessa, regional police said. REUTERS/Str (UKRAINE - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
People wait to be rescued on upper storeys at the trade union building in Odessa
People wait to be rescued on upper storeys at the trade union building in Odessa May 2, 2014. At least 38 people were killed in a fire on Friday in the trade union building in the centre of Ukraine's southern port city of Odessa, regional police said. REUTERS/Yevgeny Volokin (UKRAINE - Tags: POLITICS CIVIL UNREST)
A protester wrapped in a Ukrainian flag walks past a burning tent camp and a fire in the trade union building in Odessa
A protester wrapped in a Ukrainian flag walks past a burning tent camp and a fire in the trade union building in Odessa May 2, 2014. At least 38 people were killed in a fire on Friday in the trade union building in the centre of Ukraine's southern port city of Odessa, regional police said. REUTERS/Yevgeny Volokin (UKRAINE - Tags: POLITICS CIVIL UNREST)
People wait to be rescued on the second storey's ledge during a fire at the trade union building in Odessa
People wait to be rescued on the second storey's ledge during a fire at the trade union building in Odessa May 2, 2014. At least 38 people were killed in a fire on Friday in the trade union building in the centre of Ukraine's southern port city of Odessa, regional police said. REUTERS/Yevgeny Volokin (UKRAINE - Tags: POLITICS CIVIL UNREST)
More than 40 killed in fire, clashes in Ukraine's Odessa
UKRAINE-CRISIS/ODESSA (UPDATE 3):UPDATE 3-More than 40 killed in fire, clashes in Ukraine's Odessa
Germany's Merkel: Russia sanctions must be mixed to spread EU pain
UKRAINE-CRISIS/MERKEL-SANCTIONS (URGENT):Germany's Merkel: Russia sanctions must be mixed to spread EU pain