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.

Ukraine's Security Service (SBU) said they have killed two suspected Russian special service agents who were allegedly involved in the killing of a Ukrainian officer in Kyiv earlier this week, CNN reported.