Was the Zimmerman telegram deliberately sent to Mexico Embassy to bring the USA into WW1?
The telegram was decoded by the British before being sent to Mexico in fact it was decioherd before the German Ambassodor in America had recieved it. The Telegram was transmitted by radio and also across two telegraph routes under the cover of diplomatic messages by two neutral governments, Sweden and the United States. Germany lacked direct telegraphic access to the Western hemisphere because the British had cut the German cables in the Atlantic and shut down German stations in neutral countries. This forced Germany to use British and American cables instead despite the risk of interception. The Zimmermann messages passed over cables that touched on British soil, and as a result were intercepted there by British intelligence. see also http://www.simonsingh.
