Rubuta ci gaba don wannan sakin layi - A watan Janairun 1917, Jamus ta ci gaba da yakin basasa ba tare da wata matsala ba a cikin fatan tilasta Birtaniya ta fara tattaunawar zaman lafiya. Ministan Harkokin Wajen Jamus, Arthur Zimmermann ya gayyaci juyin juya halin da aka lalata
Mexico don shiga cikin yaki a matsayin abokin tarayya na Jamus a kan Amurka idan Amurka ta yi yaƙi da Jamus 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.