Able Archer was an annual NATO military exercise that involved thousands of military personnel and equipment. The goal of the exercise was to simulate an escalation in a conflict between NATO countries and the USSR, culminating in a co-ordinated nuclear attack. 

In 1983, the annual exercise almost triggered the outbreak of war between NATO and the Soviet Union, when miscommunication led the Soviet government to believe the West was in fact mounting an invasion. 

What was Able Archer?


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