5 February 1917 German Foreign Minister Alfred Zimmermann telegraphs German Resident Minister Heinrich von Eckardt in Mexico City again, urging him to conclude an arrangement with the Mexican government immediately.
On the same day, the last American troops of the "Punitive Expedition," led by General John J. Pershing, leave Mexico.
In London, British Director of Naval Intelligence (DNI) Admiral Sir William Reginald Hall is finally ready and takes the now mostly decrypted Zimmermann telegram across the street from Room 40 to the Foreign Office and delivers it to Lord Hardinge, the Permanent Under-Secretary for Foreign Affairs.
