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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

...today, the term remains in use as shorthand for Russian security and intelligence officers. The Cheka’s symbols were the shield and sword, the first to defend the revolution and the...

What’s the context? 4 April 1949: signature of the North Atlantic Treaty

Map of the world with NATO member countries highlighted, which are the 29 countries of NATO

...1949: signature of the North Atlantic Treaty Today, NATO is 70, its membership at 29. In recent years NATO’s remit and solidarity has been adapted, confirmed, extended and questioned, but...