Ukrainian servicemen ride on a military vehicle near Artemivsk February 19, 2015. Fighting raged in eastern Ukraine on Thursday despite European efforts to resurrect a still-born ceasefire, a day after pro-Russian separatists who spurned the truce forced thousands of government troops out of a strategic town. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen ride on a military vehicle near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen ride on a military vehicle near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen ride on a military vehicle near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen ride on a self-propelled howitzer near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen ride on a military vehicle near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve hoist a flag of their unit and gather near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve wash up near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman rides on a military vehicle near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman who fought in Debaltseve is seen in a bus before leaving for his home, near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman who fought in Debaltseve is seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve replace a window in a military vehicle before leaving for home near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen rest by a fire after their truck broke down near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen in a bus before leaving for home, near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve raise their unit flag before leaving for home, near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve hoist flags to their vehicle before leaving for home, near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman who fought in Debaltseve hoists a Ukrainian national flag to his vehicle before leaving for home, near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve hoist a Ukrainian national flag to their vehicle before leaving for home, near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman who fought in Debaltseve is seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman who fought in Debaltseve is seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian servicemen who fought in Debaltseve are seen near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

A Ukrainian serviceman rides on a self-propelled howitzer near Artemivsk February 19, 2015. (Photo by Gleb Garanich/Reuters)

Ukrainian troops push a car as tehy attempt to start it, outside Artemivsk, Ukraine, while pulling out of Debaltseve, Wednesday, February 18, 2015. (Photo by Vadim Ghirda/AP Photo)

Cossack commander Nikolai Kozitsyn, foreground, a Russian national known to his fellow rebel fighters by the nom de guerre “Daddy”, walks through a crossroads by the east Ukraine town of Debaltseve on Thursday, February 19, 2015. The town was captured by Russian-backed separatists this week after weeks of bitter battles around the area. (Photo by Peter Leonard/AP Photo)

Pro-Russia rebels pose for a photo in Debaltseve, eastern Ukraine on Thursday, February 19, 2015. After weeks of relentless fighting, the embattled Ukrainian rail hub of Debaltseve fell Wednesday to Russia-backed separatists, who hoisted a flag in triumph over the town. The Ukrainian president confirmed that he had ordered troops to pull out and the rebels reported taking hundreds of soldiers captive. (Photo by Peter Leonard/AP Photo)

Pro-Russia rebels smile in Debaltseve, eastern Ukraine on Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

A pro-Russian rebel cossack, second left, hugs another rebel in Debaltseve, eastern Ukraine, Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

Pro-Russia rebels walk in Debaltseve, eastern Ukraine on Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

A pro-Russia rebel smokes as he walks in Debaltseve, eastern Ukraine on Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

A pro-Russia rebel holds a flag of the rebel-held city of Luhansk in Debaltseve, eastern Ukraine, Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

A body of a government soldier lies by the side of the road and is covered by a Ukrainian national flag in the east Ukraine town of Debaltseve on Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

Ukrainian women push a trolley past pro-Russia rebels in Debaltseve, eastern Ukraine on Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

Pro-Russia rebels, one of them holding a flag of the rebel-held city of Luhansk, pose for a photo in Debaltseve, eastern Ukraine on Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)

A pro-Russian rebel takes a ribbon from his arm in Debaltseve, eastern Ukraine on Thursday, February 19, 2015. (Photo by Peter Leonard/AP Photo)