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Events on Friday 11 November 1983 1
1983Able Archer 83 Nuclear War ScareNATO exercise nearly mistaken for real attackA NATO command post exercise simulating a nuclear release procedure was misread by some Soviet officials as cover for a genuine surprise attack, raising war readiness on the Soviet side. Declassified accounts later described it as one of the most dangerous moments of the Cold War. Tensions eased once the exercise concluded without incident.