A Ukrainian serviceman pauses while walking to a frontline position outside Popasna, in the Luhansk region, eastern Ukraine, Sunday, Feb. 20, 2022. Russia extended military drills near Ukraine's northern borders Sunday amid increased fears that two days of sustained shelling along the contact line between soldiers and Russia-backed separatists in eastern Ukraine could spark an invasion. Ukraine's president appealed for a cease-fire. (AP Photo/Vadim Ghirda), APTOPIX