(FILES) This file photo taken on June 22, 2015 shows children playing in a shell crater after a night of shelling by pro-Russian separatists to Popasna, Lugansk region controlled by Ukrainian forces. International monitors warned on December 2, 2016 that around 600,000 impoverished people could be left without water or heat in war-scarred eastern Ukraine this winter. The words of caution came with few signs of an end to the 31-month-long conflict between Kiev and the pro-Russian separatists that has killed nearly 10,000 people in the EU's backyard. / AFP PHOTO / ANATOLII STEPANOV