Friday, February 24, 2017

The Zimmermann Telegram

(Wikipedia) The Zimmermann Telegram (or Zimmermann Note or Zimmerman Cable) was a secret diplomatic communication issued from the German Foreign Office in January 1917 that proposed a military alliance between Germany and Mexico in the event of the United States' entering World War I against Germany. The proposal was intercepted and decoded by British intelligence.
Revelation of the contents enraged American public opinion, especially after the German Foreign Secretary Arthur Zimmermann publicly admitted the telegram was genuine on 3 March, and helped generate support for the United States declaration of war on Germany in April.
The decryption was described as the most significant intelligence triumph for Britain during World War I, and one of the earliest occasions on which a piece of signals intelligence influenced world events. Continued

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