Residents look at an unexploded rocket in a living area in Kramatorsk, Ukraine, Tuesday, February 10, 2015. Ukrainian President Petro Poroshenko told Parliament that Russian-backed rebels launched an artillery strike on the town of Kramatorsk, which is more than 50 kilometers (30 miles) away from the front line. The government-controlled Donetsk regional administration said eight people were killed, while 58 people were injured after 32 rockets were launched by separatists. (Photo by AP Photo)

Residents pass by a dead body after an artillery strike in Kramatorsk, eastern Ukraine, Tuesday, February10, 2015. (Photo by AP Photo)

In this picture taken, Monday, February 9, 2015, Sveta Banina sits in her kitchen in Donetsk. Day and night, mortars and rockets rain down on the rebel stronghold in eastern Ukraine – mainly in the city's outlying districts, where the poorest people live. (Photo by Petr David Josek/AP Photo)

A Pro-Russian rebel walks past a car destroyed by a rocket during recent shelling in Donetsk, Ukraine, Monday, February 9, 2015. An armed conflict between Russia-backed separatists and Ukraine government forces has killed more than 5,300 people and displaced more than a million people in eastern Ukraine. (Photo by Petr David Josek/AP Photo)

A bag with the body of someone killed in a recent shelling is loaded into a vehicle in Donetsk, Ukraine, Monday, February 9, 2015. (Photo by Petr David Josek/AP Photo)

Soldiers stand guard as the humanitarian aid is distributed to residents in the town of Debaltseve, Ukraine, Friday, February 6, 2015. (Photo by Petr David Josek/AP Photo)

An elderly woman holds her head after collecting supplies of humanitarian aid in the town of Debaltseve, Ukraine, Friday, February 6, 2015. (Photo by Petr David Josek/AP Photo)

Ukrainian protesters burn tires outside the city council building as they protest against raising the public transport rates in Kiev, Ukraine, Monday, February 9, 2015. Public transport rates have doubled since last weekend. (Photo by Oleg Batrak/AP Photo)

A woman cleans out her damaged apartment in the area near a chemical plant which has suffered artillery shellings on February 9, 2015 in Donetsk, Ukraine. A missile exploded overnight on February 8, 2015 near a chemical plant producing weaponry in a northern suburb of Donetsk, causing a large fireball. Four apartments were burned and many others severely damaged. The shelling of the area continued this morning. (Photo by Pierre Crom/Getty Images)

A girl holds a water bottle in the town of Debaltseve, eastern Ukraine, Friday, February 6, 2015. Pro-Russia rebels and the Ukrainian authorities agreed Friday on a humanitarian corridor to evacuate civilians from the epicenter of fighting in eastern Ukraine as German and French leaders prepared to bring their peace plan to Moscow. (Photo by Evgeniy Maloletka/AP Photo)

Empty buses, intended for internally displaced persons (IDPs), wait along a road beside a burnt-out tank turret while travelling in the direction of the village of Debaltseve to evacuate the residents, in Vuhlehirsk, Donetsk region February 6, 2015. Convoys of buses converged from two sides on the town of Debaltseve in eastern Ukraine on Friday after separatist rebels and government forces appeared to have patched together a truce to allow civilians to be evacuated. Signs on the front of the drivers' windows read, “Evacuation to Donetsk”. (Photo by Maxim Shemetov/Reuters)

Members of the police of the separatist self-proclaimed Donetsk People's Republic gather near a burnt-out armoured vehicle in Vuhlehirsk, Donetsk region February 6, 2015. The rebels have been concentrating on Debaltseve, a rail hub where a government garrison has held out despite being nearly encircled. On Wednesday, the rebels appeared to have captured Vuhlehirsk, a nearby small town where government troops had also been holding out. The army said it was still contesting the town, but Reuters journalists saw no sign of areas under army control. (Photo by Maxim Shemetov/Reuters)

Member of the police of the separatist self-proclaimed Donetsk People's Republic stands near a burnt-out armoured vehicle in Vuhlehirsk, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

Members of the armed forces of the separatist self-proclaimed Donetsk People's Republic ride on a tank in Vuhlehirsk, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

Armoured vehicles, destroyed during battles between the armed forces of the separatist self-proclaimed Donetsk People's Republic and the Ukrainian armed forces, are seen in Vuhlehirsk February 6, 2015. (Photo by Maxim Shemetov/Reuters)

A local resident rides his bicycle along a street in Vuhlehirsk, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

Ukrainian servicemen keep watch at no-man's land outside Debaltseve, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

A man and a child look through a bus window before leaving as people flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. Convoys of buses converged from two sides on the town of Debaltseve in eastern Ukraine on Friday after separatist rebels and government forces appeared to have patched together a truce to allow civilians to be evacuated. (Photo by Gleb Garanich/Reuters)

A member of the Ukrainian armed forces assists local residents onto a bus to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 201. (Photo by Gleb Garanich/Reuters)

A member of the Ukrainian armed forces assists local residents onto a bus to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A member of the Ukrainian armed forces assists a local resident onto a bus to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents look through a bus window as they flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

People walk past a board showing the currency exchange rate in central Kiev February 6, 2015. A move by Ukraine's central bank to ditch an unofficial peg for the hryvnia has plunged the foreign exchange market into confusion, with buyers of hard currency putting off purchases and sellers holding out for higher levels. (Photo by Valentyn Ogirenko/Reuters)

Members of the Ukrainian armed forces assist local residents onto a bus, to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents react as they watch their relatives board buses to flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A member of the Ukrainian armed forces assists local residents onto a bus, to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Members of the Ukrainian armed forces assist local residents onto a bus, to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents get into a bus, to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A woman carries a bag containing humanitarian aid in front of a delivery point in the Ukrainian forces-controlled town of Debaltseve, Donetsk region February 6, 2015. The rebels have been concentrating on Debaltseve, a rail hub where a government garrison has held out despite being nearly encircled. (Photo by Maxim Shemetov/Reuters)

People stand in line to receive humanitarian aid as blood is seen on the ground in front of a delivery point in the Ukrainian forces-controlled town of Debaltseve, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

Local residents wait for a bus as they flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents listen to Ukrainian serviceman as they wait for a bus to flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents react as they watch their relatives board buses to flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A woman carries a bag with humanitarian aid as Ukrainian servicemen play with a dog in front of a delivery point in the government forces-controlled town of Debaltseve, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

A member of the Ukrainian armed forces assists local residents onto a bus to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents wait for a bus to flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents wait for a bus to flee the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A woman reacts as she waits for humanitarian aid in front of a delivery point in the Ukrainian forces-controlled town of Debaltseve, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

A woman carries a bag of humanitarian aid past Ukrainian servicemen in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents carry bags of humanitarian aid next to Ukrainian servicemen in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A woman carries a bag of humanitarian aid past Ukrainian servicemen in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents unload a truck of humanitarian aid near Ukrainian servicemen in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents unload a truck of humanitarian aid near Ukrainian servicemen in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

Local residents with bags containing humanitarian aid are seen in front of a delivery point in the Ukrainian forces-controlled town of Debaltseve, eastern Ukraine, February 6, 2015. Convoys of buses converged from two sides on the town of Debaltseve in eastern Ukraine on Friday after separatist rebels and government forces appeared to have patched together a truce to allow civilians to be evacuated. (Photo by Gleb Garanich/Reuters)

A member of the Ukrainian armed forces assists local residents onto a bus to flee the military conflict, in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A woman cries as she waits for humanitarian aid near a Ukrainian serviceman stands nearby in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A woman cries as she flees the conflict in Debaltseve, eastern Ukraine, February 6, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman helps a woman to carry her bag of humanitarian aid near a delivery point in the government forces-controlled town of Debaltseve, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

A Ukrainian serviceman patrols the area as people stand in line to receive humanitarian aid near a delivery point in the government forces-controlled town of Debaltseve, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

A woman looks through a bag of humanitarian aid as Ukrainian servicemen stand guard near a delivery point in the government forces-controlled town of Debaltseve, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

People take part in a vigil in memory of those who have lost their lives in east Ukraine, at Independence Square in Kiev, February 6, 2015. (Photo by Valentyn Ogirenko/Reuters)

A building destroyed during battles with the Ukrainian armed forces is seen in Vuhlehirsk, Donetsk region February 6, 2015. (Photo by Maxim Shemetov/Reuters)

A refugee from eastern Ukraine holds a meal coupon as she stands in a queue to receive food donated to a volunteer centre in Slaviansk February 7, 2015. (Photo by Gleb Garanich/Reuters)

A refugee from eastern Ukraine carries a bag of food donated to a volunteer centre in Slaviansk February 7, 2015. (Photo by Gleb Garanich/Reuters)

A volunteer distributes candy to refugees from eastern Ukraine as they stand in a queue to receive food donated to a volunteer centre in Slaviansk February 7, 2015. (Photo by Gleb Garanich/Reuters)

A member of a rebel unit of the self-proclaimed separatist Donetsk People's Republic points to a truck damaged in clashes with the Ukrainian army in the village of Olenivka, south of Donetsk, February 7, 2015. (Photo by Maxim Shemetov/Reuters)

A member of a rebel unit of the self-proclaimed separatist Donetsk People's Republic walks past a truck damaged in clashes with the Ukrainian army in the village of Olenivka, south of Donetsk, February 7, 2015. (Photo by Maxim Shemetov/Reuters)

A member of a rebel unit of the self-proclaimed separatist Donetsk People's Republic re-adjusts his rifle in the village of Olenivka, south of Donetsk, February 7, 2015. (Photo by Maxim Shemetov/Reuters)

A member of a rebel unit of the self-proclaimed separatist Donetsk People's Republic guards the village of Olenivka, south of Donetsk, February 7, 2015. (Photo by Maxim Shemetov/Reuters)

A member of a rebel unit of the self-proclaimed separatist Donetsk People's Republic walks past a house destroyed by shelling in the village of Olenivka, south of Donetsk, February 7, 2015. (Photo by Maxim Shemetov/Reuters)

Ukraine's President Petro Poroshenko holds Russian passports to prove the presence of Russian troops in Ukraine as he addresses during the 51st Munich Security Conference at the “Bayerischer Hof” hotel in Munich February 7, 2015. (Photo by Michael Dalder/Reuters)

Fuel tank trucks of the Russian Emergencies Ministry, part of a Russian convoy of trucks carrying humanitarian aid, drive along a road outside the town of Ilovaisk, Donetsk region, February 8, 2015. (Photo by Maxim Shemetov/Reuters)

Cars queue to reach a border crossing point, before driving into Russian territory, outside the village of Uspenka, Donetsk region, February 8, 2015. (Photo by Maxim Shemetov/Reuters)

Ukrainian servicemen carry a wounded comrade into a hospital in Artemivsk February 8, 2015. (Photo by Gleb Garanich/Reuters)

Medics help an injured Ukrainian serviceman as a local resident looks on at a hospital in Artemivsk February 8, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman stands on a tank near Artemivsk, eastern Ukraine, February 8, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen ride on a self-propelled howitzer near Debaltseve, eastern Ukraine, February 8, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen ride on a tank near Artemivsk, eastern Ukraine, February 8, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman wearing a new year's hat waves at his comrades while standing beside his tank near Debaltseve, eastern Ukraine, February 8, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen are seen near a tank near Artemivsk, eastern Ukraine, February 8, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman rests near Debaltseve, eastern Ukraine, February 8, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman rests as his comrades make a pipe for a wood stove near Debaltseve, eastern Ukraine, February 8, 2015. (Photo by Gleb Garanich/Reuters)