FILE PHOTO: Kosovo Liberation Army (KLA) guerrillas advance to take positions at a forest west of Podujevo some 30 km north of Kosovo's provincial capital Pristina, January 28. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

FILE PHOTO: Ethnic Albanian villagers form a line to pay their respects to the family of two victims of an outbreak of ethnic violence, in Kosovo January 31, 1999. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

FILE PHOTO: Ethnic Albanians hold onto to a trailer pulled by a tractor as they flee fighting in Pantina, 30km northeast of the regional capital Pristina February 22. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

FILE PHOTO: A Kosovar woman stands in front of more than 10,000 ethnic Albanian refugees and pleads for Macedonian policemen to let her walk into Macedonia from the buffer zone between Yugoslavia and Macedonia, April 1, 1999. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

FILE PHOTO: An ethnic Albanian woman cries at her husband's funeral in Kosovo, January 1999. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY

FILE PHOTO: Ethnic Albanian Fluter Pllana, 18, cries in front of the burning house of her uncle after Serbian police and troops set fire to the house after encircling and shelling the village of Stitarica, 30km northeast of the regional capital Pristina, February 22, 1999. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

FILE PHOTO: A young Serbian refugee from the Krajina region rests in a sports complex which houses about 2.000 people, August 12, 1995. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

FILE PHOTO: An ethnic Albanian boy from Kosovo carries a refugee child into Albanian soil to escape fighting in Serbia's turbulent Kosovo province, June 7, 1998. The refugees walked more than 30 hours from their western Kosovo villages in the Decane area. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

ATTENTION EDITORS - VISUAL COVERAGE OF SCENES OF INJURY OR DEATH - FILE PHOTO: An ethnic Albanian man mourns next to the body of his close friend Gasper Karaqi, 37, a local school teacher, who was shot dead, at a cemetery in Kosovo, February 1999. REUTERS/Yannis Behrakis/File photo SEARCH "YANNIS BEHRAKIS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.

Serbian paratroopers descend to the ground holding Serbian and Russian (L) national flags during a training exercise in the village of Nikinci, west from Belgrade, Serbia, November 14, 2014. REUTERS/Marko Djurica/File Photo

A Russian paratrooper descends to the ground during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TPX IMAGES OF THE DAY)

A Russian IL-76 transport aircraft drops a BMD armoured personnel carrier during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

A Serbian Mi-8 helicopter gunship fires unguided rockets on targets during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

A Russian BMD armoured personnel carrier descends to the ground during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

A Russian BMD armoured personnel carrier descends to the ground during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

Serbian paratroopers descend to the ground during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS)

Serbian troops open fire on targets during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS)

Serbian paratroopers descend to the ground during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

Serbian paratroopers descend to the ground holding Serbian and Russian (L) national flags during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TPX IMAGES OF THE DAY)

A Russian BMD armoured personnel carrier and troops open fire on targets during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

Russian soldiers ride on an all-terrain vehicle during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

Russian troops stand after a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS)

A Russian IL-76 transport aircraft drops a BMD armored personnel carrier during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS TRANSPORT)

Russian paratroopers descend to the ground during a training exercise in the village of Nikinci, west from Belgrade, November 14, 2014. Russian soldiers parachuted into open fields in western Serbia on Friday as part of an unprecedented joint military drill that has stirred controversy in the European Union candidate-country given the West-Russia standoff over Ukraine. The one-day anti-terrorist exercise, around 50 km (30 miles) from Serbia's border with NATO-member Croatia, illustrated the balancing-act Belgrade faces; safeguarding relations with its big-power ally while pursuing closer integration with Europe at a time of deep West-Russia tension. REUTERS/Marko Djurica (SERBIA - Tags: MILITARY POLITICS)

Coffins are seen inside a funeral services showroom in the aftermath of floods in Obrenovac, southwest of Belgrade May 20, 2014. The Balkans were hit by the worst floods in living memory last month, and the death toll has climbed gradually as more victims are found, reaching some 65 in total in Serbia and Bosnia. As the waters retreat, a wave of solidarity has given way to questions about the readiness and response of authorities to the heaviest rainfall in the region in over a century. Serbians and Bosnians are asking if so many had to die. The European Bank for Reconstruction and Development estimates the damage in Serbia at up to two billion euros ($2.7 billion), or seven percent of national output, and 1.3 billion ($1.8 billion) euros in Bosnia, or 10 percent of output. Picture taken May 20, 2014. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT)

ATTENTION EDITORS: PICTURE 20 OF 21 FOR PACKAGE 'FLOODS KNOW NO BORDERS'. TO FIND ALL IMAGES SEARCH 'BALKANS FLOODS'

A part of a vacuum cleaner is covered in mud inside a flooded house in Obrenovac, southwest of Belgrade May 20, 2014. The Balkans were hit by the worst floods in living memory last month, and the death toll has climbed gradually as more victims are found, reaching some 65 in total in Serbia and Bosnia. As the waters retreat, a wave of solidarity has given way to questions about the readiness and response of authorities to the heaviest rainfall in the region in over a century. Serbians and Bosnians are asking if so many had to die. The European Bank for Reconstruction and Development estimates the damage in Serbia at up to two billion euros ($2.7 billion), or seven percent of national output, and 1.3 billion ($1.8 billion) euros in Bosnia, or 10 percent of output. Picture taken May 20, 2014. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT)


ATTENTION EDITORS: PICTURE 17 OF 21 FOR PACKAGE 'FLOODS KNOW NO BORDERS'. TO FIND ALL IMAGES SEARCH 'BALKANS FLOODS'

Serbian Cyrillic letters float on water inside a flooded funeral services showroom in Obrenovac, southwest of Belgrade May 20, 2014. The Balkans were hit by the worst floods in living memory last month, and the death toll has climbed gradually as more victims are found, reaching some 65 in total in Serbia and Bosnia. As the waters retreat, a wave of solidarity has given way to questions about the readiness and response of authorities to the heaviest rainfall in the region in over a century. Serbians and Bosnians are asking if so many had to die. The European Bank for Reconstruction and Development estimates the damage in Serbia at up to two billion euros ($2.7 billion), or seven percent of national output, and 1.3 billion ($1.8 billion) euros in Bosnia, or 10 percent of output. Picture taken May 20, 2014. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT)


ATTENTION EDITORS: PICTURE 14 OF 21 FOR PACKAGE 'FLOODS KNOW NO BORDERS'. TO FIND ALL IMAGES SEARCH 'BALKANS FLOODS'

A church is flooded with muddy water in Obrenovac, southwest of Belgrade May 20, 2014. The Balkans were hit by the worst floods in living memory last month, and the death toll has climbed gradually as more victims are found, reaching some 65 in total in Serbia and Bosnia. As the waters retreat, a wave of solidarity has given way to questions about the readiness and response of authorities to the heaviest rainfall in the region in over a century. Serbians and Bosnians are asking if so many had to die. The European Bank for Reconstruction and Development estimates the damage in Serbia at up to two billion euros ($2.7 billion), or seven percent of national output, and 1.3 billion ($1.8 billion) euros in Bosnia, or 10 percent of output. Picture taken May 20, 2014. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT RELIGION)

ATTENTION EDITORS: PICTURE 02 OF 21 FOR PACKAGE 'FLOODS KNOW NO BORDERS'. TO FIND ALL IMAGES SEARCH 'BALKANS FLOODS'

A picture of actor Brad Pitt is seen inside a flooded hairdressing salon in Obrenovac, southwest of Belgrade May 20, 2014. The Balkans were hit by the worst floods in living memory last month, and the death toll has climbed gradually as more victims are found, reaching some 65 in total in Serbia and Bosnia. As the waters retreat, a wave of solidarity has given way to questions about the readiness and response of authorities to the heaviest rainfall in the region in over a century. Serbians and Bosnians are asking if so many had to die. The European Bank for Reconstruction and Development estimates the damage in Serbia at up to two billion euros ($2.7 billion), or seven percent of national output, and 1.3 billion ($1.8 billion) euros in Bosnia, or 10 percent of output. Picture taken May 20, 2014. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT)


ATTENTION EDITORS: PICTURE 03 OF 21 FOR PACKAGE 'FLOODS KNOW NO BORDERS'. TO FIND ALL IMAGES SEARCH 'BALKANS FLOODS'

Damaged cars are seen stranded in flood waters in the town of Obrenovac, southwest of Belgrade, May 19, 2014. Communities in Serbia and Bosnia battled to protect towns and power plants on Monday from rising flood waters and landslides that have devastated swathes of both countries and killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Local people travel on a boat in the flooded town of Obrenovac, southwest of Belgrade, May 19, 2014. Communities in Serbia and Bosnia battled to protect towns and power plants on Monday from rising flood waters and landslides that have devastated swathes of both countries and killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A car is seen stranded in flood waters in the town of Obrenovac, southwest of Belgrade, May 19, 2014. Communities in Serbia and Bosnia battled to protect towns and power plants on Monday from rising flood waters and landslides that have devastated swathes of both countries and killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Damaged cars are seen stranded in flood waters in the town of Obrenovac, southwest of Belgrade, May 19, 2014. Communities in Serbia and Bosnia battled to protect towns and power plants on Monday from rising flood waters and landslides that have devastated swathes of both countries and killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A toy is pictured in the flooded town of Obrenovac, southwest of Belgrade, May 19, 2014. Communities in Serbia and Bosnia battled to protect towns and power plants on Monday from rising flood waters and landslides that have devastated swathes of both countries and killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A man makes coffee on a balcony in the flooded town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Local youths walk through flood waters with items they looted from a store in the town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A damaged car is seen stranded in flood waters in the town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Serbian army soldiers drive through the flood waters in the town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT MILITARY)

A damaged electronic shop is seen in the flooded town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A damaged textile shop is seen in the flooded town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A man walks through flood waters in the town of Obrenovac, southwest of Belgrade May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A man walks by a car stranded in flood waters in the town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Vehicles are seen stranded in the flooded town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A car is seen stranded in the flooded town of Obrenovac, southwest of Belgrade, May 19, 2014. Soldiers and energy workers stacked thousands of sandbags overnight to protect Serbia's biggest power plant from flood waters expected to keep rising after the heaviest rains in the Balkans in more than a century killed dozens of people. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A man stands next to a dead goat in the flooded town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A man walks through flood water in the town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A dog barks at a dead pig in the flooded town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A man paddles his boat past cars soaked in flood water in the town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Residents and a dog walk through flood water in the town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT ANIMALS)

A man walks through flood water in the town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

A dead pig is seen hanging in a yard in the flooded town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Firefighters evacuate people on a boat in the flooded town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Residents sit on a boat in the flooded town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT)

Serbian army soldiers evacuate people on a boat in the flooded town of Obrenovac, May 18, 2014. Soldiers, police and villagers battled to protect power plants in Serbia from rising flood waters on Sunday as the death toll from the Balkan region's worst rainfall in more than a century reached 37. Twelve bodies were recovered from the worst-hit Serbian town of Obrenovac, but the number was likely to rise as waters receded. REUTERS/Antonio Bronic (SERBIA - Tags: DISASTER ENVIRONMENT MILITARY)

People stand in their apartments as they wait to be evacuated in the flooded town of Obrenovac, southwest of Belgrade, Serbia May 17, 2014. Emergency services pulled seven dead bodies from flooded homes in Bosnia on Saturday and soldiers rushed to free hundreds of people stranded in a school in Serbia during the worst floods to hit the Balkans in over a century. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT MILITARY)

Serbian army soldiers evacuate an injured man in the flooded town of Obrenovac, southwest of Belgrade, Serbia May 17, 2014. Emergency services pulled seven dead bodies from flooded homes in Bosnia on Saturday and soldiers rushed to free hundreds of people stranded in a school in Serbia during the worst floods to hit the Balkans in over a century. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT MILITARY)

Serbian army soldiers evacuate an injured man in the flooded town of Obrenovac, southwest of Belgrade, Serbia May 17, 2014. Emergency services pulled seven dead bodies from flooded homes in Bosnia on Saturday and soldiers rushed to free hundreds of people stranded in a school in Serbia during the worst floods to hit the Balkans in over a century. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT MILITARY)

Serbian army soldiers are pictured in a mirror as they evacuate people in an amphibious vehicle in the flooded town of Obrenovac, southwest of Belgrade, Serbia May 17, 2014. Emergency services pulled seven dead bodies from flooded homes in Bosnia on Saturday and soldiers rushed to free hundreds of people stranded in a school in Serbia during the worst floods to hit the Balkans in over a century. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT MILITARY)

Serbian army soldiers evacuate people in an amphibious vehicle in the flooded town of Obrenovac, southwest of Belgrade, Serbia May 17, 2014. Emergency services pulled seven dead bodies from flooded homes in Bosnia on Saturday and soldiers rushed to free hundreds of people stranded in a school in Serbia during the worst floods to hit the Balkans in over a century. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT MILITARY)

People wait to be evacuated in the flooded town of Obrenovac, southwest of Belgrade, Serbia May 17, 2014. Emergency services pulled seven dead bodies from flooded homes in Bosnia on Saturday and soldiers rushed to free hundreds of people stranded in a school in Serbia during the worst floods to hit the Balkans in over a century. REUTERS/Marko Djurica (SERBIA - Tags: DISASTER ENVIRONMENT)