Ka kammala wannan magana: A watan Janairu na shekara ta 1917, Jamus ta sake soma yaƙi da jiragen ruwa na ƙarƙashin ruwa da ba a hanawa ba da begen cewa za ta tilasta wa Britaniya ta soma tattaunawar salama. Ministan Harkokin Wajen Jamus, Arthur Zimmermann ya gayyaci
Mexico ta shiga yaki a matsayin kawayen Jamus a kan Amurka idan Amurka ta yi wa Jamus yaƙi a cikin Zimmermann Telegram. A musayar, Jamusawa za su aika da kuɗin Mexico kuma su taimaka mata ta dawo da yankunan Texas, New Mexico da Arizona da Mexico ta rasa a lokacin yakin Mexico da Amurka shekaru 70 da suka gabata. Jami'an leken asirin Birtaniya sun kama sakon kuma sun ba da bayanin zuwa Washington. Wilson ya saki bayanin Zimmerman ga jama'a kuma Amurkawa sun gan shi a matsayin "casus belli" - hujja don yaƙi.