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What’s the context? Polish cryptologists reveal they have cracked the Enigma code, 26 July 1939

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The three Polish codebreakers Marian Rejewski, Jerzy Rozycki and Henryk Zygalski

...Polish Signals Bureau sent a coded message to his French counterpart on 30 June that ‘there is a new development’. This was not a cryptologic breakthrough, but a willingness to...

What’s the Context? 20 December 1917: formation of the Cheka, the first Soviet security and intelligence agency

...source: newworldencyclopedia.org Before the October Revolution in 1917 that put the Bolsheviks in power in Russia, their long-exiled leader, Lenin, had insisted publicly that in a proletarian dictatorship there would...