On this day, 97 years ago, August 27, 1928 (July 13, 1928, the Kellog-Briand Convention was signed. U.S. President Coolidge signed the Kellog-Briand Convention. On August 27, 1928, the United States, France, Britain, Germany and 11 other countries signed the Kellog-Briand Convention in Paris, declaring the war illegal. The signing ceremony of the Kellog-Briand Convention was very simple. Diplomats were not allowed to speak at the French Ministry of Foreign Affairs, so most diplomats felt uncomfortable, and the images and sounds of the signing ceremony were recorded on film for the first time in history. More than one diplomat felt it unfair to prevent countries around the world from expressing their opinions on this.