OTD December 18, 1940, Hitler signs Directive Number 21 aka #Operation_Barbarossa. Soviet spy #Richard_Sorge warns Moscow and is ignored. “The German armed forces must be ready before the end of the war against Great Britain to defeat the Soviet Union by means of Blitzkrieg.” pic.twitter.com/FeOAFVdGe5
— SPIES&VESPERS (@SpiesVespers) December 18, 2023
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