Potsdam Conference

The Potsdam Conference was held at Cecilienhof, the home of Crown Prince Wilhelm in Potsdam, Germany, from 17 July to 2 August 1945. The participants were the Soviet Union, the United Kingdom, and the United States, represented respectively by Communist Party General Secretary Joseph Stalin, Prime Ministers Winston Churchill and Clement Attlee, and President Harry S. Truman.
Tehran Conference

The Tehran Conference 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. 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.
Yalta Conference

The Yalta Conference, also known as the Crimea Conference and code-named the Argonaut Conference, held February 4–11, 1945, was the World War II meeting of the heads of government of the United States, the United Kingdom, and the Soviet Union to discuss the postwar reorganization of Germany and Europe. The three states were represented by President Franklin D. Roosevelt, Prime Minister Winston Churchill, and Premier Joseph Stalin, respectively. The conference was held near Yalta in Crimea, Soviet Union, within the Livadia, Yusupov, and Vorontsov Palaces.
Cairo Conference

The Cairo Conference of November 22–26, 1943, held in Cairo, Egypt, outlined the Allied position against Japan during World War II and made decisions about postwar Asia.
Origins of the Cold War

The origins of the Cold War involved the breakdown of relations between the Soviet Union versus the United States, Great Britain and their allies in the years 1945–1949.
W. Averell Harriman

William Averell Harriman, better known as Averell Harriman, was an American Democratic politician, businessman, and diplomat. The son of railroad baron E. H. Harriman, he served as Secretary of Commerce under President Harry S. Truman and later as the 48th Governor of New York. He was a candidate for the Democratic presidential nomination in 1952 and 1956, as well as a core member of the group of foreign policy elders known as "The Wise Men".
First Quebec Conference

The First Quebec Conference, codenamed "QUADRANT", was a highly secret military conference held during World War II by the governments of the United Kingdom, Canada, and the United States. It took place in Quebec City, Quebec, Canada, on August 17–24, 1943, at both the Citadelle and the Château Frontenac. The chief representatives were Winston Churchill and Franklin D. Roosevelt, hosted by the Canadian Prime Minister, William Lyon Mackenzie King.
Casablanca Conference

The Casablanca Conference was held at the Anfa Hotel in Casablanca, Morocco, from January 14 to 24, 1943, to plan the Allied European strategy for the next phase of World War II. In attendance were United States President Franklin D. Roosevelt and British prime minister Winston Churchill. Also attending and representing the Free French forces were Generals Charles de Gaulle and Henri Giraud, though they played minor roles and were not part of the military planning. Premier Joseph Stalin had declined to attend, citing the ongoing Battle of Stalingrad as requiring his presence in the Soviet Union.
Declaration by United Nations

Declaration by United Nations was the main treaty that formalized the Allies of World War II; the declaration was signed by 47 national governments between 1942 and 1945. On New Year's Day 1942, the Allied "Big Four" signed a short document which later came to be known as the United Nations Declaration and the next day the representatives of twenty-two other nations added their signatures.
Provisional Government of the Republic of Poland

The Provisional Government of the Republic of Poland was created by the State National Council on the night of 31 December 1944.
Four Policemen

The term "Four Policemen" refers to a post-war council consisting of the Big Four that U.S. President Franklin D. Roosevelt proposed as a guarantor of world peace. The members of the Big Four, called the Four Powers during World War II, were the four major Allies of World War II: the United Kingdom, the United States, the Soviet Union and China. The United Nations envisioned by Roosevelt consisted of three branches: an executive branch comprising the Big Four, an enforcement branch composed of the same four great powers acting as the Four Policemen or Four Sheriffs, and an international assembly representing the member nations of the UN.
Percentages agreement

The Percentages agreement was a secret informal agreement between British prime minister Winston Churchill and Soviet leader Joseph Stalin during the Fourth Moscow Conference in October 1944. It gave the percentage division of control over Eastern European countries, dividing them into spheres of influence. Franklin Roosevelt was consulted tentatively and conceded to the agreement. The content of the agreement was first made public by Churchill in 1953 in the final volume of his memoir. The US ambassador Averell Harriman, who was supposed to represent Roosevelt in these meetings, was excluded from this discussion.
Presidency of Franklin D. Roosevelt, third and fourth terms

The third and fourth terms of the presidency of Franklin D. Roosevelt began on January 20, 1941, the date of Roosevelt's third inauguration, and ended with Roosevelt's death on April 12, 1945. Roosevelt won a third term by defeating Republican nominee Wendell Willkie in the 1940 United States presidential election. He remains the only president to serve for more than two terms. Unlike his first two terms in office, Roosevelt's third and fourth terms were dominated by foreign policy concerns, as the United States became a belligerent in World War II in December 1941.
Foreign policy of the Harry S. Truman administration

The foreign policy of the Harry S. Truman administration was the foreign policy of the United States from April 12, 1945 to January 20, 1953, when Harry S. Truman served as the President of the United States. The Truman administration's foreign policy primarily addressed the end of World War II, the aftermath of that war, and the beginning of the Cold War. Truman's presidency was a turning point in foreign affairs, as the United States engaged in an internationalist foreign policy and renounced isolationism.