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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

The 3 Polish codebreakers Marian Rejewski, Jerzy Rozycki and Henryk Zygalski ‘Il y a du nouveau’ On 26 July 1939, in the Pyry Forest south of Warsaw, Polish cryptologists revealed...

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

...sword to smite its enemies. Spreading the Revolution Initially focussed on internal opposition, the Cheka began very soon to send agents abroad to gather intelligence and promote revolution by covert...

What’s the Context? 21 March 1946: Frank Roberts’ ‘Long Telegram’

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...evacuating Bornholm, withdrawing forces from Manchuria, establishing diplomatic relations with Switzerland. Roberts thought these moves designed partly to deflect Security Council criticism, and partly because ‘Soviet policy has overreached itself...