Russia on Saturday issued a new call for diplomats and foreigners to leave Kiev, warning the Ukrainian capital of new "massive" strikes, in a statement by its foreign ministry.
Moscow and Kiev have been attacking each other with drone and missile barrages and in the past week have stepped up the strikes, targeting key infrastructure.
In a statement on Saturday, the Russian foreign ministry said it "had previously urged foreign nationals and diplomats in Kiev to leave the city and refrain from visiting Ukraine."
"We note with concern that not everyone has heeded these warnings, and that individuals are knowingly exposing themselves to mortal danger," the ministry said.
"The Armed Forces of the Russian Federation will continue to deliver massive retaliatory strikes," it warned.
It also stated that "responsibility for any potential negative consequences rests entirely with those who ignore this warning."
On Friday, Kiev mayor Vitali Klitschko said the city should now be on a war footing as the enemy was "tearing Kiev apart" with strikes on bridges and energy infrastructure.
Ukrainian President Volodymyr Zelenskyy accused his Russian counterpart Vladimir Putin of ripping up the rulebook of armed conflict by sanctioning massive attacks on civilian areas, an accusation the Kremlin has rejected.
