Russia launched four missiles and 136 drones into Ukraine overnight into Monday morning, according to Ukraine's air force, after President Donald Trump said the U.S. would provide Kyiv with more Patriot surface-to-air systems to help defend against Russia's nightly bombardments.

Russia fired 597 drones and decoys, along with 26 cruise missiles, into Ukraine overnight into Saturday, Ukraine's air force said.

Russia pounded Ukraine with hundreds of drones and dozens of missiles on Saturday, in the fourth major attack this month, targeting western cities and killing at least two people in Chernivtsi on the border with Romania.