Battle rages in Ukraine

Members of the separatist self-proclaimed Donetsk People's Republic army collect parts of a destroyed Ukrainian army tank in the town of Vuhlehirsk, west of Debaltseve, Ukraine February 16, 2015. Separatists are keeping up attacks on the strategic railway junction of Debaltseve despite a ceasefire in eastern Ukraine, a Kiev military spokesman said, and witnesses reported heavy shelling in the area. REUTERS/Baz Ratner

Fighters of the separatist self-proclaimed Donetsk People's Republic walk past a destroyed Ukrainian army armored personnel carrier in the town of Vuhlehirsk, February 16, 2015. REUTERS/Baz Ratner

A man carries a sack of flour from a truck that is part of a Russian humanitarian convoy delivering food, in Donetsk, February 15, 2015. REUTERS/Baz Ratner

A woman walks by a building, which was damaged by shelling last September, in Donetsk, February 15, 2015. REUTERS/Baz Ratner

Members of the armed forces of the separatist self-proclaimed Donetsk People's Republic stand guard at a checkpoint near Donetsk, February 15, 2015. REUTERS/Baz Ratner

A man walks past a destroyed Ukrainian army artillery cannon in the town of Vuhlehirsk, west of Debaltseve, February 16, 2015. REUTERS/Baz Ratner

The body of a woman killed by shelling lies in a vehicle in Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

Members of the armed forces of the separatist self-proclaimed Donetsk People's Republic rest at a checkpoint near Donetsk, February 15, 2015. REUTERS/Baz Ratner

A woman sits in a shelter in the town of Enakievo near Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

Holes are seen in a window damaged by shelling in Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

A man injured by shelling stands near a damaged building in Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

A man ice-fishes on a frozen river in Donetsk, February 15, 2015. REUTERS/Baz Ratner

Youths inspect a hole caused by shelling in Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

A woman inspects the damage to a window caused by shelling in Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

A member of the armed forces of the separatist self-proclaimed Donetsk People's Republic makes a victory sign to his comrades riding a track outside the town of Kondratyevka near Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

A woman walks past a damaged building in the town of Vuhlehirsk near Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

Members of the armed forces of the separatist self-proclaimed Donetsk People's Republic stand on top of a track outside the town of Kondratyevka near Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

A man sweeps the sidewalk near a building damaged by shelling in Donetsk, Ukraine, February 14, 2015. REUTERS/Baz Ratner

Locals shop at a market in Donetsk, February 15, 2015. REUTERS/Baz Ratner

Locals walk past a destroyed Ukrainian army truck in the town of Vuhlehirsk, west of Debaltseve, February 16, 2015. REUTERS/Baz Ratner