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VUGLEGIRSK , UKRAINE - FEBRUARY 18: Remains of a destroyed Ukrainian armored vehicle with the text "Glory to Ukraine, Glory to our Heros" written on the front, on the road to Debaltseve on February 18, 2015, near Vuglegirsk, Ukraine. Ukrainian troops have been forced to retreat from Debaltseve following continued fighting as rebels advance on the town in spite of the recent ceasefire agreement. (Photo by Pierre Crom/Getty Images)

VUGLEGIRSK , UKRAINE - FEBRUARY 18: Remains of a destroyed Ukrainian armored vehicle with the text "Glory to Ukraine, Glory to our Heros" written on the front, on the road to Debaltseve on February 18, 2015, near Vuglegirsk, Ukraine. Ukrainian troops have been forced to retreat from Debaltseve following continued fighting as rebels advance on the town in spite of the recent ceasefire agreement. (Photo by Pierre Crom/Getty Images)