Ukrainian servicemen hold a position on the frontline with Russia backed separatists near small city of Marinka, Donetsk region on April 12, 2021. - Ukrainian soldiers have been killed in clashes with pro-Russia separatists in Ukraine's war-torn east, its military said on April 12, 2021, as Kiev again accused Moscow of massing tens of thousands of soldiers on its border. (Photo by STR / AFP)