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We intend to begin on the first of February unrestricted submarine warfare. We shall endeavor in spite of this to keep the United States of America neutral. In the event of this not succeeding we make Mexico a proposal of alliance on the following basis: make war together, make peace together, generous financial support and an understanding on our part that Mexico is to reconquer the lose territory in Texas, New Mexico and Arizona. The settlement in detail is left to you… (Telegram of January 19, 1917)
What is the Zimmerman Note?