WarGames for real: How one 1983 exercise nearly triggered WWIII

“Let’s play Global Thermonuclear War.” Thirty-two years ago, just months after the release of the movie WarGames, the world came the closest it ever has to nuclear Armageddon. In the movie version of a global near-death experience, a teenage hacker messing around with an artificial intelligence program that just happened to control the American nuclear missile force unleashes chaos. In reality, a very different computer program run by the Soviets fed growing paranoia about the intentions of the United States, very nearly triggering a nuclear war. The software in question was a KGB computer model constructed as part of Operation RYAN (РЯН), details of which were obtained from Oleg Gordievsky, the KGB’s London section chief who was at the same time spying for Britain’s MI6. Named for an acronym for “Nuclear…


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