an agreement signed on August 27, 1928, by the United States, France, the United Kingdom, and Italy.
After negotiations, the pact was signed in Paris at the French Foreign Ministry by the representatives from Australia, Belgium, Canada, Czechoslovakia, France, Germany, British India, the Irish Free State, Italy, Japan, New Zealand, Poland, South Africa, the United Kingdom and the United States. It was provided that it would come into effect on July 24, 1929. By that date, the following nations had deposited instruments of definitive adherence to the pact: Afghanistan, Albania, Austria, Bulgaria, China, Cuba, Denmark, Dominican Republic, Egypt, Estonia, Ethiopia, Finland, Guatemala, Hungary, Iceland, Latvia, Liberia, Lithuania, the Netherlands, Nicaragua, Norway, Panama, Peru, Portugal, Romania, the Soviet Union, the Kingdom of the Serbs, Croats, and Slovenes, Siam, Spain, Sweden, and Turkey. Eight further states joined after that date: Persia, Greece, Honduras, Chile, Luxembourg, Danzig, Costa Rica and Venezuela.
In the United States, the Senate approved the treaty overwhelmingly, 85-1, with only Wisconsin Republican John J. Blaine voting against. While the U.S. Senate did not add any reservation to the treaty, it did pass a measure "interpreting" the treaty which included the statement that the treaty must not infringe upon America's right of self defense and that the United States was not obliged to enforce the treaty by taking action against those who violated it.