Ukrainian government troops sit in the back of pick-up trucks as they pass a checkpoint near the town of Mariupol, Ukraine, Tuesday, Feb. 10, 2015. The intense fighting, which the U.N. says has killed more than 5,300 people since April, comes ahead of a crucial summit including Western leaders on Wednesday as well as peace talks later Tuesday. The volunteer Azov battalion said on social media on Tuesday that it captured several villages northeast of the strategic port of Mariupol, pushing the rebels closer to the border with Russia. (AP Photo/Petr David Josek)