Local residents sit inside a bomb shelter where they are seeking refuge during what they say is shelling in Donetsk August 9, 2014. More than 1,100 people have been killed in the fighting in Ukraine since mid-April, according to the United Nations, in a civil conflict that has dragged ties between Russia and the West to their lowest since the Cold War. (Photo by Sergei Karpukhin/Reuters)

People stand in a queue to get into a branch of Sberbank of Russia bank in Donetsk on August 9, 2014. The centre of the one-million strong city appears to have become a new battleground in the fighting, coming under sustained shelling for the first time on August 7, with mortar fire hitting a hospital and residences near a key rebel base. Ukraine said on August 8 it warded off a Russian attempt to send troops across the border under the guise of a humanitarian mission, fuelling Western fears that Moscow is planning to invade. (Photo by Dimitar Dilkoff/AFP Photo)

A serviceman walks near an APC while a helicopter flies on the position of the Ukrainian troops in Donetsk region on August 9, 2014. Fighting with pro-Russian separatists in eastern Ukraine has left 13 troops dead in the last 24 hours, Ukraine's military said Saturday. (Photo by Anatolii Stepanov/AFP Photo)

People fix their broken windows after shelling in Donetsk on August 9, 2014. (Photo by Dimitar Dilkoff/AFP Photo)

Ukrainian government troops roll on their military vehicles in Donetsk region, eastern Ukraine, Saturday, August 9, 2014. A top commander of the pro-Russia insurgency in eastern Ukraine said Saturday that Ukrainian forces have seized a key town, leaving the rebel region's largest city of Donetsk surrounded. (Photo by Alexander Zemlianichenko/AP Photo)

An armed pro-Russian separatist stands in front of damaged buildings following what locals say was shelling by Ukrainian forces in Donetsk August 7, 2014. The Ukrainian government said on Thursday it was suspending a ceasefire with separatist rebels at the crash site of the Malaysian airliner after an international recovery mission had been halted. (Photo by Sergei Karpukhin/Reuters)

Refugees from Eastern Ukraine wash themselves at a refugee temporary tent camp at the Donetsk city of Rostov area, Russia, 08 August 2014. At least 19 people were killed and 97 injured in fighting between government troops and pro-Russian separatists in eastern Ukraine over the past 24 hours, officials said. (Photo by Arkady Budnitsky/EPA)

Surface-to-surface missile complex Grad of Ukrainian army fires during fighting between militants and Ukrainian forces in Donetsk region, Ukraine, 07 August 2014. The death toll mounted on 06 August as Ukrainian and separatist forces fought for control of several eastern cities, with Western powers expressing concern about the possibility of a Russian incursion. Government airstrikes on central Donetsk – a key separatist stronghold – resulted in three civilian deaths, according to city officials. Officials in nearby Gorlovka reported 33 civilian deaths and 129 injuries from artillery fire over the course of the last few days. (Photo by Roman Pilipey/EPA)

A man inspects wreckage inside a damaged building following what locals say was shelling by Ukrainian forces in Donetsk August 7, 2014. (Photo by Sergei Karpukhin/Reuters)

Journalists walk near a crater caused by a shell which damaged a house following fighting between pro-Russian rebels and Ukrainian government forces in Shakhtarsk, Donetsk region, eastern Ukraine, Thursday, August 7, 2014. (Photo by Evgeniy Maloletka/AP Photo)

A local resident takes off a broken window in his flat in a damaged building after shelling, during fighting between pro-Russian rebels and Ukrainian government forces in Shakhtarsk, Donetsk region, eastern Ukraine, Thursday, August 7, 2014. (Photo by Evgeniy Maloletka/AP Photo)

People transport office equipment from a damaged building following what locals say was shelling by Ukrainian forces in Donetsk August 7, 2014. (Photo by Sergei Karpukhin/Reuters)

People sit in the basement of the city hospital in Donetsk, eastern Ukraine, 07 August 2014. (Photo by Igor Kovalenko/EPA)

A pro-Russian rebel stands at a tank guarding a checkpoints in Shakhtarsk, Donetsk region, eastern Ukraine, Thursday, August 7, 2014. The possibility of an escalation in Ukraine as well as a ratcheting up in tensions between Western nations and Russia has cast a long shadow over the eurozone's fragile economic upswing. (Photo by Evgeniy Maloletka/AP Photo)

A man receives mediacal treatment in a hospital basement in Donetsk, eastern Ukraine, 07 August 2014. (Photo by Igor Kovalenko/EPA)

Local residents cry and hug each other as they sit in a hospital basement in Donetsk, eastern Ukraine, 07 August 2014. (Photo by Igor Kovalenko/EPA)

A woman looks out from a damaged window following what locals say was shelling by Ukrainian forces in Donetsk August 7, 2014. (Photo by Sergei Karpukhin/Reuters)

Local residents walk past a damaged building after shelling, during a fighting between pro-Russian rebels and Ukrainian government forces in Shakhtarsk, Donetsk region, eastern Ukraine, Thursday, August 7, 2014. (Photo by Evgeniy Maloletka/AP Photo)

A local resident reacts as he inspects the damage after shelling in Donetsk, eastern Ukraine, Thursday, August 7, 2014. Fighting in the rebel stronghold of Donetsk claimed more civilian casualties, bringing new calls from Russian nationalists for President Vladimir Putin to send in the army. (Photo by Sergei Grits/AP Photo)