1. Ten vessels are sunk with the loss of 8 lives on the first day of unrestricted submarine warfare.
3. The United States severs diplomatic relations with Germany. Count von Bernstorff is given his passports.
6. Fourteen ships, including the passenger steamer "Port Adelaide," are sunk by submarines in the war zone.
8. Brazil, Peru, Chile, Uruguay, Bolivia, Panama, Cuba, and Argentina refuse to recognize the German blockade.
10. Ambassador Gerard leaves Germany.
16. British troops in Mesopotamia force the Turks back on the Tigris.
22. Seven Dutch steamers torpedoed by a German submarine while sailing supposedly under a safe conduct from Germany.
24. Kut-el-Amara captured by British.
25. The British attacking German positions on the Ancre capture Serre.
26. President Wilson asks authority to arm merchant ships.
28. The U.S. government publishes a communication from Zimmermann, German foreign minister, to the German minister at Mexico City, suggesting an alliance against the United States whereby Mexico would be given opportunity to reconquer Texas, New Mexico, and Arizona.
“If we would hold the true course in love, our first step must be to turn our eyes not to man, the sight of whom might oftener produce hatred than love, but to God, who requires that the love which we bear to him be diffused among all mankind, so that our fundamental principle must ever be, Let a man be what he may, he is still to be loved because God is loved.”
–Calvin, Institutes