Enemy shelling killed four Ukrainian soldiers in the eastern Donbass region on Tuesday, the military said, reporting the highest death toll in a single day since last October.
Conflict between Ukrainian troops and Russian-backed forces has killed 13,000 people since 2014 despite a notional ceasefire.
"We are sadly reporting that as a result of enemy shelling today, according to available information, four of our heroes received injuries incompatible with life," the military said in a statement.
New President Volodymyr Zelenskiy came to power this year promising to end the conflict and offered face-to-face talks with Russian President Vladimir Putin in a neutral venue.
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