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Yalta Conference
The goal of conference was to shape a post-war peace that represented not just a collective security order but a plan to give self-determination to the liberated peoples of post-Nazi Europe. The meeting was intended mainly to discuss the re-establishment of the nations of war-torn Europe. -
United Nations
The General Assembly meets under its president or Secretary-General in regular yearly sessions the main part of which lasts from September to December and resumed part from January until all issues are addressed (which often is just before the next session's start). It can also reconvene for special and emergency special sessions. -
Atomic bomb tested
Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 am on July 16, 1945, as part of the Manhattan Project. The test was conducted in the Jornada del Muerto desert about 35 miles (56 km) southeast of Socorro, New Mexico, on what was then the USAAF Alamogordo Bombing and Gunnery Range (now part of White Sands Missile Range). -
Potsdam conference
The Potsdam Conference (German: Potsdamer Konferenz) was held at Cecilienhof, the home of Crown Prince Wilhelm, in Potsdam, occupied Germany, from 17 July to 2 August 1945. The goals of the conference also included the establishment of post-war order, peace treaty issues, and countering the effects of the war. -
Atomic bomb dropped
The United States, with the consent of the United Kingdom as laid down in the Quebec Agreement, dropped nuclear weapons on the Japanese cities of Hiroshima and Nagasaki on August 6 and 9, 1945, respectively, during the final stage of World War II. The two bombings, which killed at least 129,000 people, remain the only use of nuclear weapons for warfare in history. -
Winston Churchill "Iron Curtain" speech
The Iron Curtain was the name for the boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. -
Truman Doctrine
The Truman Doctrine was an American foreign policy created to counter Soviet geopolitical spread during the Cold War. It was first announced to Congress by President Harry S. Truman on March 12, 1947 and further developed on July 12, 1948 when he pledged to contain Soviet threats to Greece and Turkey. American military force was usually not involved, but Congress appropriated free gifts of financial aid to support the economies and the military of Greece and Turkey. -
The Marshall Plan
The Marshall Plan (officially the European Recovery Program, ERP) was an American initiative to aid Western Europe, in which the United States gave over $12 billion (approximately $120 billion in current dollar value as of June 2016) in economic support to help rebuild Western European economies after the end of World War II. The plan was in operation for four years beginning April 8, 1948. -
The Berlin Blockade
The Berlin Blockade (24 June 1948 – 12 May 1949) was one of the first major international crises of the Cold War. During the multinational occupation of post–World War II Germany, the Soviet Union blocked the Western Allies' railway, road, and canal access to the sectors of Berlin under Western control. The Soviets offered to drop the blockade if the Western Allies withdrew the newly introduced Deutsche mark from West Berlin. -
NATO
The North Atlantic Treaty Organization, also called the North Atlantic Alliance, is an intergovernmental military alliance based on the North Atlantic Treaty which was signed on 4 April 1949. -
Korean War starts
Armed forces from communist North Korea smash into South Korea, setting off the Korean War. The United States, acting under the auspices of the United Nations, quickly sprang to the defense of South Korea and fought a bloody and frustrating war for the next three years. -
Hydrogen bomb
The United States detonates the world’s first thermonuclear weapon, the hydrogen bomb, on Eniwetok atoll in the Pacific. The test gave the United States a short-lived advantage in the nuclear arms race with the Soviet Union. Following the successful Soviet detonation of an atomic device in September 1949, the United States accelerated its program to develop the next stage in atomic weaponry, a thermonuclear bomb. Popularly known as the hydrogen bomb
