Oleg Gordievsky, a former Soviet KGB officer instrumental in altering the trajectory of the Cold War by surreptitiously sharing classified information with the UK, passed away at his residence in England.

Source: https://www.euronews.com/2025/03/22/oleg-gordievsky-a-kgb-spy-who-defected-to-the-uk-in-the-cold-war-dies-at-86