A Russian convoy of trucks carrying humanitarian aid for Ukraine travels along a road south of the city of Voronezh August 14, 2014. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS TRANSPORT CIVIL UNREST CONFLICT)

A Russian convoy of trucks carrying humanitarian aid for Ukraine travels along a road south of the city of Voronezh August 14, 2014. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS TRANSPORT CIVIL UNREST CONFLICT)

A Russian convoy of trucks carrying humanitarian aid for Ukraine travels along a road south of the city of Voronezh August 14, 2014. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS TRANSPORT CIVIL UNREST CONFLICT)

A Russian convoy of trucks carrying humanitarian aid for Ukraine travels along a road south of the city of Voronezh August 14, 2014. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS TRANSPORT CIVIL UNREST CONFLICT)

A Russian convoy of trucks carrying humanitarian aid for Ukraine travels along a road south of the city of Voronezh August 14, 2014. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS TRANSPORT CIVIL UNREST CONFLICT)

A Russian convoy of trucks carrying humanitarian aid for Ukraine travels along a road south of the city of Voronezh August 14, 2014. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS TRANSPORT CIVIL UNREST CONFLICT)

Trucks of a Russian convoy carrying humanitarian aid for Ukraine are parked at the military air base outside Voronezh, August 13, 2014. Ukraine described Russia's dispatch of an aid convoy advancing now towards its border as a cynical act designed to fan a pro-Russian rebellion the UN said on Wednesday had claimed nearly 1,000 lives, fighters and civilians, in two weeks. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS CONFLICT CIVIL UNREST TRANSPORT)

Trucks of a Russian convoy carrying humanitarian aid for Ukraine are parked at the military air base outside Voronezh, August 13, 2014. Ukraine described Russia's dispatch of an aid convoy advancing now towards its border as a cynical act designed to fan a pro-Russian rebellion the UN said on Wednesday had claimed nearly 1,000 lives, fighters and civilians, in two weeks. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS CONFLICT CIVIL UNREST TRANSPORT)

Trucks of a Russian convoy carrying humanitarian aid for Ukraine are parked at the military air base outside Voronezh, August 13, 2014. Ukraine described Russia's dispatch of an aid convoy advancing now towards its border as a cynical act designed to fan a pro-Russian rebellion the UN said on Wednesday had claimed nearly 1,000 lives, fighters and civilians, in two weeks. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS CONFLICT CIVIL UNREST TRANSPORT)

Trucks of a Russian convoy carrying humanitarian aid for Ukraine are parked at the military air base outside Voronezh, August 13, 2014. Ukraine described Russia's dispatch of an aid convoy advancing now towards its border as a cynical act designed to fan a pro-Russian rebellion the UN said on Wednesday had claimed nearly 1,000 lives, fighters and civilians, in two weeks. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS CONFLICT CIVIL UNREST TRANSPORT)

Trucks of a Russian convoy carrying humanitarian aid for Ukraine are parked at the military air base outside Voronezh August 13, 2014. Ukraine described Russia's dispatch of an aid convoy advancing now towards its border as a cynical act designed to fan a pro-Russian rebellion the UN said on Wednesday had claimed nearly 1,000 lives, fighters and civilians, in two weeks. REUTERS/Maxim Shemetov (RUSSIA - Tags: POLITICS CONFLICT CIVIL UNREST TRANSPORT)

Russia's Andrey Arshavin (R) is challenged by Belgium's Laurent Ciman during their international friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium 's Laurent Ciman (R) challenges Russia's Pavel Pogrebnyak during their international friendly soccer match in Voronezh, some 500 km ( 311 miles ) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Romelu Lukaku celebrates scoring a goal against Russia during their international friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Romelu Lukaku celebrates scoring a goal against Russia during their international friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Steven Defour celebrates a goal against Russia during their international friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Russian fans light flares during the international friendly soccer match against Belgium in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER IMAGES OF THE DAY)

Belgium's players celebrate a goal against Russia during their international friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Vincent Kompany (R) challenges Russia's Pavel Pogrebnyak during their international friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Russia's coach Dick Advocaat reacts during their friendly soccer match against Belgium in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Romelu Lukaku (R) is challenged by Russia's Roman Shishkin during their friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Marouane Fellaini (R) challenges Russia's Alan Dzagoev during their friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Russia's coach Dick Advocaat reacts during the international friendly soccer match against Belgium in Voronezh, some 500 km ( 311 miles ) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Eden Hazard (L) controls the ball against Russia's Igor Akinfeev (R), Sergei Ignashevich and Roman Shirokov (2nd L) during their friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Belgium's Romelu Lukaku celebrates scoring a goal against Russia during their friendly soccer match in Voronezh, some 500 km (311 miles) south of Moscow November 17, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: SPORT SOCCER)

Russian Prime Minister Vladimir Putin (C) walks to meet firefighters near the city of Voronezh, August 4, 2010. A heatwave has engulfed central parts of European Russia since mid June, pushing temperatures to the highest levels since records began and sparking forest fires that have killed at least 48 people. REUTERS/Denis Sinyakov (RUSSIA - Tags: POLITICS DISASTER)

Russian Prime Minister Vladimir Putin (C) visits a hotel where people displaced from their homes in wildfires areas are staying in the city of Voronezh, August 4, 2010. A heatwave has engulfed central parts of European Russia since mid June, pushing temperatures to the highest levels since records began and sparking forest fires that have killed at least 48 people.. REUTERS/Denis Sinyakov (RUSSIA - Tags: POLITICS DISASTER)

Russian Prime Minister Vladimir Putin (C) and Voronezh region Governor Alexei Gordeyev (L) are escorted by local Rescue Minister officer at an airport in city of Voronezh, August 4, 2010. Putin arrived to Voronezh to observe situation with wildefires in the region. A heatwave has engulfed central parts of European Russia since mid June, pushing temperatures to the highest levels since records began and sparking forest fires that have killed at least 48 people. REUTERS/Denis Sinyakov (RUSSIA - Tags: POLITICS DISASTER ENVIRONMENT)

Russian Prime Minister Vladimir Putin (2nd L) meets with Russian Rescuer Ministry pilots at a airport in Voronezh, August 4, 2010. A heatwave has engulfed central parts of European Russia since mid June, pushing temperatures to the highest levels since records began and sparking forest fires that have killed at least 48 people. REUTERS/Denis Sinyakov (RUSSIA - Tags: POLITICS DISASTER ENVIRONMENT)

Russian Prime Minister Vladimir Putin (C) visit a hotel where people displaced from their homes in wildfires areas are staying in the city of Voronezh, August 4, 2010. A heatwave has engulfed central parts of European Russia since mid June, pushing temperatures to the highest levels since records began and sparking forest fires that have killed at least 48 people. REUTERS/Denis Sinyakov (RUSSIA - Tags: POLITICS DISASTER ENVIRONMENT)

Russian Prime Minister Vladimir Putin (L) meets with firefighters on a site of recent wildfire near the city of Voronezh, August 4, 2010. A heatwave has engulfed central parts of European Russia since mid June, pushing temperatures to the highest levels since records began and sparking forest fires that have killed at least 48 people. REUTERS/Denis Sinyakov (RUSSIA - Tags: DISASTER POLITICS ENVIRONMENT)

An employee operates a combine as he harvests barley at the "Vorobyevskoye Agro" collective farm some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT AGRICULTURE BUSINESS)

An employee drives a truck as he harvests maize at the "Novyi Put'" (New Way) collective farm some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT AGRICULTURE BUSINESS)

Employees harvest barley at the "Vorobyevskoye Agro" collective farm some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT AGRICULTURE BUSINESS)

An employee operates a combine as he harvests barley at the "Vorobyevskoye Agro" collective farm some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT AGRICULTURE BUSINESS)

An employee operates a tractor as he ploughs ground at the "Vorobyevskoye Agro" collective farm some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT AGRICULTURE BUSINESS)

Employees harvest maize at the "Novyi Put'" (New Way) collective farm some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT BUSINESS AGRICULTURE)

General Director of the "Prodimeks-Holding" farm Alexander Fedyayev holds sugar beet in a field some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT AGRICULTURE BUSINESS)

A sugar beet field on the "Prodimeks-Holding" farm is seen some 250 km (155 miles) south-east of the city of Voronezh, August 1, 2010. The drought that has decimated the wheat harvest from the Black Earth belt, stretching from Romania to Siberia, has put sowing for next year's crop in jeopardy too. Russia, the world's third largest wheat exporter last year, is in the midst of its worst drought in 130 years, causing forecasters to sharply reduce their export estimates, sending futures soaring in Chicago and Paris. Picture taken August 1, 2010. REUTERS/Sergei Karpukhin (RUSSIA - Tags: AGRICULTURE ENVIRONMENT BUSINESS)

Burnt trees are seen during sunset outside the town of Novovoronezh, some 40 km (25 miles) south of the city of Voronezh, August 2, 2010. Russia's leaders declared a state of emergency on Monday in seven provinces and ordered authorities to guard weapons storage facilities from wildfires that have killed at least 40 people. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

A firefighter works to extinguish a fire outside the town of Novovoronezh, some 40 km (25 miles) south of the city of Voronezh, August 2, 2010. Russia's leaders declared a state of emergency on Monday in seven provinces and ordered authorities to guard weapons storage facilities from wildfires that have killed at least 40 people. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

A firefighter works to extinguish a fire outside the town of Novovoronezh, some 40 km (25 miles) south of the city of Voronezh, August 2, 2010. Russia's leaders declared a state of emergency on Monday in seven provinces and ordered authorities to guard weapons storage facilities from wildfires that have killed at least 40 people. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

A fire truck parks near burning grass and trees, outside the town of Novovoronezh, some 40 km (25 miles) south of the city of Voronezh, August 2, 2010. Russia's leaders declared a state of emergency on Monday in seven provinces and ordered authorities to guard weapons storage facilities from wildfires that have killed at least 40 people. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

A firefighter works to extinguish a fire outside the town of Novovoronezh, some 40 km (25 miles) south of the city of Voronezh, August 2, 2010. Russia's leaders declared a state of emergency on Monday in seven provinces and ordered authorities to guard weapons storage facilities from wildfires that have killed at least 40 people. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

Grass and trees are on fire outside the town of Novovoronezh, some 40 km (25 miles) south of the city of Voronezh, August 2, 2010. Russia's leaders declared a state of emergency on Monday in seven provinces and ordered authorities to guard weapons storage facilities from wildfires that have killed at least 40 people. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

A forest is on fire outside the town of Novovoronezh, some 40 km (25 miles) south of the city of Voronezh, August 2, 2010. Russia's leaders declared a state of emergency on Monday in seven provinces and ordered authorities to guard weapons storage facilities from wildfires that have killed at least 40 people. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

A man walks amidst the ruins of a burnt house in the village of Shuberskoye outside Voronezh, August 2, 2010. Russian Orthodox Patriarch Kirill asked Russians to pray for rain on Sunday as wildfires raged across the European parts of the vast country, sweltering since June in an unprecedented heat wave. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT RELIGION)

A firefighter works to extinguish fire in a pine forest outside Voronezh, August 2, 2010. Russian Orthodox Patriarch Kirill asked Russians to pray for rain on Sunday as wildfires raged across the European parts of the vast country, sweltering since June in an unprecedented heat wave. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT RELIGION)

A firefighter works to extinguish fire in a pine forest outside Voronezh, August 2, 2010. Russian Orthodox Patriarch Kirill asked Russians to pray for rain on Sunday as wildfires raged across the European parts of the vast country, sweltering since June in an unprecedented heat wave. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT RELIGION)

A woman walks amidst heaps of clothes at a humanitarian assistance office in the settlement of Maslovka outside Voronezh, August 2, 2010. Russian Orthodox Patriarch Kirill asked Russians to pray for rain on Sunday as wildfires raged across the European parts of the vast country, sweltering since June in an unprecedented heat wave. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT RELIGION)

An employee gives clothes to a woman at a humanitarian assistance office in the settlement of Maslovka outside Voronezh, August 2, 2010. Russian Orthodox Patriarch Kirill asked Russians to pray for rain on Sunday as wildfires raged across the European parts of the vast country, sweltering since June in an unprecedented heat wave. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT RELIGION)

A firefighter works to extinguish forest fires on the outskirts of the Russian city of Voronezh, July 31, 2010. Forest fires sweeping across European Russia on Friday killed at least 25 people and forced the evacuation of thousands in the hottest weather since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT)

Firefighters work to extinguish forest fires on the outskirts of the Russian city of Voronezh, July 31, 2010. Forest fires sweeping across European Russia on Friday killed at least 25 people and forced the evacuation of thousands in the hottest weather since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT)

Firefighters works to extinguish forest fires on the outskirts of the Russian city of Voronezh, July 31, 2010. Forest fires sweeping across European Russia on Friday killed at least 25 people and forced the evacuation of thousands in the hottest weather since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT)

A firefighter works to extinguish forest fires on the outskirts of the Russian city of Voronezh July 31, 2010. Forest fires sweeping across European Russia on Friday killed at least 25 people and forced the evacuation of thousands in the hottest weather since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: DISASTER ENVIRONMENT)

A firefighter works to extinguish forest fires on the outskirts of the Russian city of Voronezh, July 30, 2010. Forest fires sweeping across European Russia on Friday killed at least 25 people and forced the evacuation of thousands in the hottest weather since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

Firefighters work to extinguish forest fires on the outskirts of the Russian city of Voronezh, July 30, 2010. Forest fires sweeping across European Russia on Friday killed at least 25 people and forced the evacuation of thousands in the hottest weather since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

Local residents work to prevent new fire outbreaks on the outskirts of the Russian city of Voronezh, July 30, 2010. Forest fires sweeping across European Russia on Friday killed at least 25 people and forced the evacuation of thousands in the hottest weather since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)

A soldier walks past birches, which are damaged by fire, on the outskirts of the Russian city of Voronezh July 30, 2010. Forest fires swept across central Russia on Friday, killing at least eight people and forcing the evacuation of thousands during the hottest summer since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER IMAGES OF THE DAY)

Bunches of sweet pepper, which are damaged by fire, are seen near a burnt house on the outskirts of the Russian city of Voronezh July 30, 2010. Forest fires swept across central Russia on Friday, killing at least eight people and forcing the evacuation of thousands during the hottest summer since records began 130 years ago. REUTERS/Sergei Karpukhin (RUSSIA - Tags: ENVIRONMENT DISASTER)