The barrage comes ahead of a planned call between Presidents Trump and Putin on Monday, as the US pushes for a ceasefire.

Mercenaries are outlawed under international law. But Russia has misused the label to deny foreign fighters their protections as prisoners of war.

(Reuters) -British Prime Minister Keir Starmer on Sunday discussed the war in Ukraine with leaders of the U.S., Italy, France and Germany, a Downing Street spokesperson said. Looking ahead to U.S. President Donald Trump's call with Russia's President Vladimir Putin on Monday,

With future U.S. aid in doubt, Kyiv is ramping up domestic production of arms such as its Bohdana howitzer.

The first direct talks in three years between Russia and Ukraine on Friday failed to broker the ceasefire Kyiv and its allies have been urging in the more than three-year-old war.

Ukrainia's military intelligence agency said that Russia was planning to conduct a "training and combat" launch of an intercontinental ballistic missile late on Sunday to intimidate Ukraine and the West.

On the night of Sunday, May 18, the Russian army launched a massive drone attack across Ukraine. Damage from shelling was recorded in another Kyiv district, according to the Kyiv City Military Administration press service.