A Russia-backed rebel contemplates his next chess move at the most forward front line base, on the outskirts of Donetsk, Ukraine, Sunday, March 8, 2015. More than 6,000 people have died in eastern Ukraine since the start of the conflict almost a year ago that has led to a "merciless devastation of civilian lives and infrastructure," according to the U.N. human rights office.(AP Photo/Vadim Ghirda), APTOPIX