Ukraine and Russia have escalated their shadow war of espionage, sabotage, and assassinations, with both countries claiming a growing list of captured agents, intercepted plots, and cross-border attacks.

Russian drone attacks killed a 53-year-old Ukrainian man in Ukraine’s Sumy region and left parts of the city of Sumy without power, the Kyiv Independent reported, citing local authorities.

Ukraine has “eliminated” two suspected Russian secret agents after a gunfight in a spy den in Kyiv. The man and woman killed were thought to be part of Russia’s FSB and behind the daylight assassination of one of Ukraine’s top spies this week.

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

Hundreds of Russian attack drones and more than two dozen cruise missiles targeted Ukraine overnight, killing at least two people, Ukraine said.

President Volodymyr Zelenskiy said that Russia launched 597 drones and 26 missiles, killing two people, wounding 20, and damaging civilian infrastructure from Kharkiv and Sumy in the northeast to Lviv, Lutsk, and Chernivtsi in the west.