<P> The Tehran Conference ( codenamed Eureka ) was a strategy meeting of Joseph Stalin , Franklin D. Roosevelt , and Winston Churchill from 28 November to 1 December 1943 , after the Anglo - Soviet Invasion of Iran . It was held in the Soviet Union 's embassy in Tehran , Iran . It was the first of the World War II conferences of the `` Big Three '' Allied leaders ( the Soviet Union , the United States , and the United Kingdom ) . It closely followed the Cairo Conference which had taken place on 22 -- 26 November 1943 , and preceded the 1945 Yalta and Potsdam conferences . Although the three leaders arrived with differing objectives , the main outcome of the Tehran Conference was the Western Allies ' commitment to open a second front against Nazi Germany . The conference also addressed the ' Big Three ' Allies ' relations with Turkey and Iran , operations in Yugoslavia and against Japan , and the envisaged post-war settlement . A separate protocol signed at the conference pledged the Big Three to recognize Iran 's independence . </P>
<P> The Tehran Conference ( codenamed Eureka ) was a strategy meeting of Joseph Stalin , Franklin D. Roosevelt , and Winston Churchill from 28 November to 1 December 1943 , after the Anglo - Soviet Invasion of Iran . It was held in the Soviet Union 's embassy in Tehran , Iran . It was the first of the World War II conferences of the `` Big Three '' Allied leaders ( the Soviet Union , the United States , and the United Kingdom ) . It closely followed the Cairo Conference which had taken place on 22 -- 26 November 1943 , and preceded the 1945 Yalta and Potsdam conferences . Although the three leaders arrived with differing objectives , the main outcome of the Tehran Conference was the Western Allies ' commitment to open a second front against Nazi Germany . The conference also addressed the ' Big Three ' Allies ' relations with Turkey and Iran , operations in Yugoslavia and against Japan , and the envisaged post-war settlement . A separate protocol signed at the conference pledged the Big Three to recognize Iran 's independence . </P>
which big three allied leaders met at teheran in 1943
which big three allied leaders met at teheran in 1943
Joseph Stalin Franklin D. Roosevelt Winston Churchill
Joseph Stalin Franklin D. Roosevelt Winston Churchill