which big three allied leaders met at teheran in 1943
Tehran Conference The Tehran Conference (codenamed Eureka[1]) 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 22â€“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.
British Expeditionary Force (World War II) The BEF (General Lord Gort) began moving to France in September 1939. The British assembled along the Belgian–French border on the left of the French First Army as part of the French 1er groupe d'armées (1st Army Group) of the Front du Nord-est (North-Eastern Front). Most of the BEF spent the Phoney War digging field defences on the French–Belgian border, before the Battle of France (Fall Gelb) began on 10 May 1940. The BEF constituted 10 percent of the Allied forces on the Western Front. The BEF participated in the Dyle Plan, a rapid advance into Belgium to the line of the river Dyle but had to retreat through Belgium and north-western France with the rest of the 1er groupe d'armées, after the German breakthrough further south at the Battle of Sedan. The BEF, French and Belgian forces cut off north of the Somme river were evacuated from the French North Sea coast through port and beaches of Dunkirk in Operation Dynamo.