In January , British cryptographers deciphered a telegram from German Foreign Minister Arthur Zimmermann to the German Minister to. : El telegrama Zimmermann: % Customer Satisfaction Guaranteed. : El telegrama Zimmermann () and a great selection of similar New, Used and Collectible Books available now at great prices.

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H,” a British agent in Mexico, bribed an employee of the commercial telegraph company for a copy of the message. Woodrow Wilson considered another military invasion of Veracruz and Tampico in —, [25] [26] so as to take control of the Tehuantepec Isthmus and Tampico oil fields, [26] [27] but this time the relatively new Mexican President Venustiano Carranza threatened to destroy the oil fields in case the Marines landed there. Wilson released the text to the media on 28 February Furthermore, the British needed to find a way to convince the Americans the message was not a forgery.

However, once the Zimmermann note was public, Wilson called for arming the merchant ships, but anti-war elements in the United States Senate blocked his proposal. The Oxford History of Mexico. American Foreign Relations, Volume 1: Wilson had previously refused to assign US Navy crews and guns to the merchant ships.

First at a press e, on 3 Marchhe told an American journalist, “I cannot deny it. However, after the discovery of this document, the GCHQ official historian said: At worst, the Germans might have realized that the code had been compromised, but weighed against the possibility of United States entry into the war, that was a risk worth taking.

Any doubts as telegtama the authenticity of the telegram were removed by Arthur Zimmermann himself. Privately, the British needed to give the Americans the cipher so that the United States government could verify the authenticity of the message independently with their own commercial telegraphic records; however the Americans agreed to back the official cover story.

However, the United States allowed limited use of its diplomatic cables with Germany to communicate with its ambassador in Washington. British Naval Intelligence, — Retrieved 14 August Since the public had been told untruthfully that the telegram had been stolen in a deciphered form in Mexico, the message was widely believed at first to be an elaborate forgery perpetrated by British intelligence.


This belief, which was not restricted to pacifist and pro-German lobbies, was promoted by German and Mexican diplomats and by some American newspapers, especially the Hearst press empire. During this period, Grey and cryptographer William Montgomery completed the decryption. Here the signals were boosted for the long trans-oceanic jump by radio.

Zimmermann Telegram

They were reliant on the United States to transmit Zimmermann’s note to its final destination, but the message’s unencrypted contents would be deeply alarming to the Americans. The Codebreakers of World War Zimmrrman. You will inform the President of the above most secretly as soon as the outbreak of war with the United States of America is certain and add the suggestion that he should, on his own initiative, invite Japan to immediate adherence and at the same time mediate between Japan and ourselves.

However, there was also a notable anti-British sentiment in the United States, particularly among German- and Irish-Americans.

Mexico and the United States, Volume 3. In Octoberit was reported that an original typescript of the deciphered Zimmermann Telegram had recently been discovered by an unnamed historian who was researching and preparing an official history of the United Kingdom’s Government Communications Headquarters GCHQ. Uncle Sam Wants You: Bernstorff, Count Johann Heinrich This section does not cite any sources.

Archived from the original on Direct telegraph transmission of the telegram was not possible because the British had cut the German international cables at the outbreak of war. Bell was at first incredulous and thought it to be a forgery.

The Germans persuaded U. Singh, Simon 8 September The Germans handed in messages to the United States embassy in Berlin, which were relayed to the embassy in Denmark and then to the United States by American telegraph operators. Moreover, the retransmission was telrgrama using the older cipherso by mid-February the British had not only the complete text, but also the ability sl release the telegram without revealing the extent to which the latest German codes had been broken.


The telegram was intercepted and decoded by British intelligence. Hall passed the telegram to the Foreign Office on 5 February, but still warned against releasing it.

Many Americans wished to avoid the conflict in Europe. The German Foreign Office refused to consider a possible code break, and instead sent Ambassador Eckardt on a witch-hunt for a traitor in zimerman embassy in Mexico.

Zimmermann Telegram – Wikipedia

Please help to improve this section by introducing more precise citations. Finally, since copies of the ciphertext would also have been deposited in the records of the American commercial telegraph company, the British had the ability to prove the authenticity of the message to the United States government. The Growth of American Foreign Policy: Boghardt, Thomas November The failure of United States troops to capture Pancho Villa in and the movement of President Carranza in favor of Germany emboldened the Germans to send the Zimmermann note.

The zimmedman is believed to be the actual telegram shown to the American ambassador in London in July Learn how and when to remove this template message. University of Texas Press.

Criptograma de la Primera Guerra Mundial

This page was last edited on 10 Decemberat Articles needing additional references from January All articles needing additional references All articles with unsourced statements Articles with unsourced statements from May Articles lacking in-text citations from July All articles lacking in-text citations Commons category link from Wikidata.

Retrieved from ” https: Once Bell was convinced the message was genuine, he became enraged. With the evidence the United States had been provided confidentially by the British, Wilson realized zim,erman message was genuine—but he could zimmerjan make the evidence public without compromising the British codebreaking operation.