Iran has waged war on Germany, a common enemy of the three powers. Stalin, Churchill and Roosevelt raised the issue of Iran`s special financial needs during the war and the possibility of needing assistance after the war. The three powers said they would continue to provide assistance to Iran. The Iranian government and the three powers reach an agreement on respect for Iran`s independence, sovereignty and integrity within the framework of all differences of opinion. The United States, the USSR and the United Kingdom expect Iran, together with other allied nations, to make peace after the end of the war, which was agreed after the declaration. How did these three giants come together on the world stage in Tehran? Although Roosevelt presided over all the plenary sessions of the conference, it was undoubtedly the astute Stalin who dominated the proceedings from the beginning and effectively opposed Roosevelt and Churchill to impose his own agenda. The American president was almost immediately disadvantaged by being housed in the Soviet embassy (supposedly for logistical and security reasons), where Stalin`s secret policemen could turn to him. The Tehran conference was also one of the first discussions on the formation of the United Nations. President Roosevelt first introduced Stalin to the idea of an international organization that encompasses all nation-states, a place for solving common problems and revising international aggressors. After Germany plunged the world into chaos for the second time in as many generations, the three world leaders agreed that something had to be done to avoid a similar event.  The three governments are aware that the war has posed particular economic difficulties for Iran, and they have all agreed that they will continue to provide the Iranian government with as much economic assistance as possible, given the high demands placed on them by their global military operations and by the global shortage of means of transport and raw materials. deliveries for civilian consumption.
 In a joint statement of 1 December, Churchill, Stalin and Roosevelt recognized « the supreme responsibility of us and all the United Nations to establish a peace that commands the goodwill of the overwhelming mass of the world`s peoples and banishes the scourge and terror of war for many generations. » After the meeting in Tehran, Roosevelt and Churchill returned to Cairo to discuss who would lead Operation Overlord. After some discussions, they agreed on General Dwight D. Eisenhower, who became the 34th President of the United States in 1953.