Moscow said the overnight strike was in response to an alleged Ukrainian drone strike on a residence used by President Vladimir Putin, which the U.S. and others said did not happen.

Russia bombarded Ukraine with hundreds of drones and dozens of missiles in a large-scale overnight attack, officials said Friday, killing at least four people in the capital.

A nuclear-capable missile fired into Ukraine near Poland sent a message to Europe days after its leaders agreed to postwar security guarantees, Russian analysts said.

Russia fired a hypersonic Oreshnik missile at a target in western Ukraine overnight Thursday, near the border with NATO member Poland, in what has been labeled a brazen “warning” to the wider continent and the United States.

Russia fired a powerful hypersonic missile overnight at a target in Ukraine near the border with NATO member Poland, in what Kyiv on Friday called a new threat to European security that demanded a global reaction.

The Russian Defense Ministry said on Friday that it had struck western Ukraine with a nuclear-capable intermediate-range ballistic missile, an ominous warning by President Vladimir V. Putin of Russia as U.S.-led negotiations to end the war have gained steam.

Russia doubled down on its longstanding position of declaring Western forces in Ukraine “legitimate targets” on Thursday, days after France and the UK pledged to send troops there in the event of a peace deal.

The hypersonic Oreshnik intermediate range ballistic missile hit Ukraine’s western Lviv region late Thursday night, although officials there did not mention any casualties. The area is near a military base in neighboring Poland, a NATO member, that serves as a key hub for ferrying Western military supplies to Kyiv.

"I feel strongly they (Russia) wouldn't re-invade, or I wouldn't agree to it," Trump told the New York Times when asked about Washington's potential involvement in safeguarding Ukraine against future Russian aggression.