Which Agreement Were Reached At The Tehran Conference
Roosevelt was in his third presidential term in 1943. According to biographer Doris Kearns Goodwin, Roosevelt was eager to find his friend Churchill instead of worrying about the dangers of a secret journey through war zones. He also welcomed the prospect of meeting Stalin for the first time and appreciated the challenge of bringing the austere Soviet leader into the Pacific War against Japan. The “Big Three,” as the leaders were known, discussed ways to defeat Nazi Germany and agreed on an invasion of Normandy, code-named Operation Overlord, launched in June 1944. In exchange for U.S. aid to Germany`s defeat on the Eastern Front, Stalin promised to help the United States win its war against Japan. The meeting was so friendly that Churchill later expressed his unease at Roosevelt`s extraordinary efforts to charm and welcome Stalin. Churchill would have preferred an indirect attack on Germany at the Overlord and would have distrusted the Soviet leader. Stalin, for his part, wanted a territorial buffer between the Soviet Union and Germany, composed of the former Baltic states of Poland and part of Germany, to be part of any post-war peace settlement. The leaders then turned to the conditions under which the Western Allies would open a new front through the invasion of northern France (Operation Overlord), as Stalin had pressed it since 1941.
Until then, Churchill had advocated the extension of the joint operations of British, American and Commonwealth troops in the Mediterranean, as the opening of a new Western Front was physically impossible due to the absence of existing sea routes, leaving the Mediterranean and Italy as viable destinations for 1943. It was agreed that Operation Overlord would be launched by May 1944 by American and British forces and that Stalin would support the Allies with a simultaneous large-scale offensive on the East German Front (Operation Bagration) to divert German troops from northern France.  Hitler`s last state in North Africa had already been lost in May with the occupation of Tunisia by Anglo-American troops, who could thus concentrate their efforts on Churchill`s famous “low-axis” in Europe. The governments of the United States, the U.S. S.S.R. and the United Kingdom acknowledge Iran`s support for the continuation of the war against the common enemy, including by facilitating the transport of supplies from overseas to the Soviet Union.