Severance of Diplomatic Relations
| Austria against Japan |
Aug. 26, 1914 |
| Austria against Portugal |
March 15, 1916 |
| Austria against Serbia |
July 26, 1914 |
| Austria against United States |
April 8, 1917 |
| Belgium against Turkey |
Oct. 30, 1914 |
| Bolivia against Germany |
April 14, 1917 |
| Brazil against Germany |
April 11, 1917 |
| China against Germany |
March 14, 1917 |
| Costa Rica against Germany |
Sept. 21, 1917 |
| Ecuador against Germany |
Dec. 7, 1917 |
| Egypt against Germany |
Aug. 13, 1914 |
| France against Austria |
Aug. 11, 1914 |
| France against Turkey |
Oct. 30, 1914 |
| Germany against Italy |
May 23, 1915 |
| Great Britain against Turkey |
Oct. 30, 1914 |
| Greece against Austria |
July 2, 1917 |
| (Government of Alexander) |
|
| Greece against Turkey |
July 2, 1917 |
| (Government of Alexander) |
|
| Guatemala against Germany |
April 27, 1917 |
| Haiti against Germany |
June 16, 1917 |
| Honduras against Germany |
May 17, 1917 |
| Japan against Austria |
Aug. 25, 1914 |
| Liberia against Germany |
May 8, 1917 |
| Nicaraugua against Germany |
May 19, 1917 |
| Peru against Germany |
Oct. 5, 1917 |
| Rumania against Bulgaria |
Aug. 30, 1916 |
| Russia against Bulgaria |
Oct. 19, 1915 |
| Russia against Rumania |
Jan. 28, 1918 |
| Russia against Turkey |
Oct. 30, 1914 |
| Santo Domingo against Germany |
June 8, 1917 |
| Turkey against United States |
April 20, 1917 |
| United States against Germany |
Feb. 3, 1917 |
| Uruguay against Germany |
Oct. 7, 1917 |
-Compiled from the Official United States Bulletin and Current History.SBBS 580.1