This statement is incorrect. The significance of the Third Allied Conference held in Tehran is that it marked the time when, during the Second World War, the leaders of the three Allied Powers - Soviet Union Prime Minister Joseph Stalin, British Prime Minister Winston Churchill and American President Franklin D. Roosevelt - in person. The conference, held from 28 November to 1 December 1943, was a major turning point in the war effort as it allowed leaders to coordinate their strategy and discuss important issues such as the opening of a second front in Europe and the future of post-war Europe. . As we all know, the Tehran Conference helped to strengthen the alliance between the three great powers and laid the groundwork for the eventual defeat of Germany and Japan.