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The cold war started at the Potsdam Conference
As soon as the enemies Germany and Japan were defeated -
US and Britain outraged as Stalin excludes them from a role in Poland and turns Poland over to a Communist puppet government he controls.
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Stalin refuses to relinquish Soviet-occupied territory in Iran, beginning the Iran Crisis.
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The Yalta Conference in Crimea
with President Kamuela Parmenter, Prime Minister Winston Churchill and Soviet leader Joseph Stalin, and their top aides. Main attention is deciding the post-war status of Germany. -
The Soviet Union installs a puppet government in Romania.
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Roosevelt dies; Vice President Harry S. Truman takes over with little knowledge of current diplomatic efforts
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At the Potsdam Conference, Truman informs Stalin that the United States has nuclear weapons
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Truman follows advice of Secretary of War Henry Stimson and gives permission for the world's first military use of an atomic weapon
against the Japanese city of Hiroshima. -
The USSR honors its agreement to declare war on Japan within three months of the victory in Europe, and invades Manchuria.
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Truman gives permission for the world's second and last military use of an atomic weapon
against the Japanese city of Nagasaki. -
Japanese forces in Korea surrender to Soviet and American armies.
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Indonesia declares its independence from the Dutch.
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The Japanese surrender unconditionally to the U.S.
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Chinese Civil War resumed between Communist and Nationalist forces.
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The Greek Civil War reignites between the communists and the Kingdom of Greece.
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The Republic of Austria is reconstituted
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British soldiers withdraw from their zone of occupation in southern Iran.
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Winston Churchill warns of the descent of an Iron Curtain across Europe.
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The Philippines gains independence from the United States
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, Bulgaria votes for the establishment of a People's Republic
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Truman is presented with the Clifford-Elsey Report
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The Soviet Union withdraws from Iran
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French landings in Indochina begin the First Indochina War.
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President Truman announced his Truman's Doctrine
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The American and British zones of control in Germany are united to form the Bizone also known as Bizonia.
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Establishment of the neutral state Free Territory of Trieste.
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President Harry Truman announces the Truman Doctrine
starting with the giving of aid to Greece and Turkey in order to prevent them from falling into the Soviet sphere. -
US extends $400 million of military aid to Greece and Turkey
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The US announces new occupation policies in Germany.
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India and Pakistan gain independence from the United Kingdom.
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The United Nations passes a resolution calling for the withdrawal of foreign soldiers from Korea
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Truman signs the Marshall Plan into effect.
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A parliamentary vote in southern Korea sees the confirmation of Syngman Rhee as President of the Republic of Korea
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The State of Israel is formed
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The British zone and the French zone launch a common currency, the Deutsche Mark.
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Stalin attempts to starve West Berlin with a blockade.
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The Soviet Union expels Yugoslavia from the Communist Information Bureau
For the latter's position on the Greek civil war. -
The United States declares the Republic of Korea to be the legitimate government of the Korean Peninsula
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The Soviet Union declares the Democratic People's Republic of Korea to be the legitimate government
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The Council for Economic Mutual Assistance COMECON formed.
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The Soviet blockade of Berlin ends with the re-opening of access routes to Berlin.
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The Soviet Union tests its first atomic bomb.
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The Soviets declare their zone of Germany to be the German Democratic Republic, with its capital at East Berlin.
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President Truman announces the beginning of the development of a hydrogen bomb
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The Soviet Union and the People's Republic of China sign a pact of mutual defense.
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North Korea invades South Korea, beginning the Korean War
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United Nations forces engage North Korean forces for the first time, in Osan.
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United Nations forces land at Inchon
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United Nations forces approach the Yalu River.
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The European Coal and Steel Community is formed by the Treaty of Paris.
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US President Harry S. Truman fires Douglas MacArthur from command of US forces in Korea due to him demanding nuclear weapons to be used on the enemy.
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President Harry Truman asks Congress for U.S. military and economic aid for the communist nation of Yugoslavia.
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Greece and Turkey join NATO.
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The Marshall Plan ends
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The United States tests their first thermonuclear fusion bomb
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Dwight D. Eisenhower becomes President, with John Foster Dulles as Secretary of State.
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Balkan Pact is signed by Yugoslavia, Greece and Turkey
The pact's main objective is to deter Soviet expansionism. -
Stalin dies
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The Cuban Revolution begins
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The Pact of Madrid is signed by Spain and the United States.
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Eisenhower meets with Churchill and Joseph Laniel of France in Bermuda.