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.

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.