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March 12th, 1947:
Harry Truman (shown above) spearheaded a US foreign policy called The Truman Doctrine. The policy, which included acts such as financial aid to Greece and Turkey, aimed to contain the USSR's influence and stop the spread of communism. This signified the beginning of Cold War tensions between the US and the USSR.

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President Truman signing the Marshall Plan

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June 5th, 1947:
President Truman signed the "European recovery plan" which was formally known as The Marshall Plan. It's aim was to give economic assistance to European nations that suffered from the impacts of WWII. Similarly to the Truman Doctrine, it helped stop the spread of communism.

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Airlifts to drop supplies during the blockade

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June 24th, 1948 - May 12th 1949:
The Berlin Blockade was the first major conflict of the Cold War. The Soviet Union blocked Western access and transportation into the West-controlled areas of Berlin.

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American soldiers walking alongside Korean civilians 

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June 25th, 1950 - July 27th 1953:
The Korean War was a conflict between North and South Korea, where the USSR and China backed the North and the United States of America backed the South. It was a proxy war of the Cold War, where major powers could indirectly fight each other.

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November 1st, 1955 - April 30th, 1975:
Another proxy war was the Vietnam War, in which the USSR once again backed a communist North and the US backed the South. It was an effort by the US to contain the spread of communism, but resulted in mass civilian deaths in Vietnam. It sparked the anti-war movement in the US.

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Soviet leaders discuss the Pact in Warsaw, Poland

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May 15th, 1955:
The Warsaw Pact was the Eastern bloc's response to NATO. It was a military defense treaty that was formed in order to balance the power created by the West's NATO.

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October 4th, 1957:
Sputnik was created as part of the Space Race, a competition between the USSR and the US to "conquer" space. Sputnik was a Soviet satellite and was the first satellite to orbit in space.

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April 12th, 1961:
Another aspect of the Space Race was the effort to put a human being in space. The Soviet Union sent cosmonaut Yuri Gagarin to orbit Earth.

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August 13th, 1961:
This wall, built by the communist East Berlin, divided the German city of Berlin - both physically and figuratively. The East and West sides, backed by East and West powers respectively, had little-to-no contact for nearly 30 years.

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October 14th - 28th, 1962:
This conflict, which lasted thirteen days, were one of the most tense parts of the Cold War. Soviet missiles in Cuba led to the potential brink of nuclear war, only to be solved through negotiations and diplomacy.

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John F. Kennedy in the motorcade before he was assassinated

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November 22, 1963:
The assassination of JFK led to significant fear among American citizens. In a time of anxiety, this domestic event led to tensions abroad and at home. The subsequent transfer of power also led to new policies and negotiations.

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Buzz Aldrin Jr. shown before the US flag on the moon

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July 20th, 1969:
One of the culminating acts of the Space Race was the US landing on the moon. The crew, made of Neil Armstrong, Michael Collins, and Buzz Aldrin Jr., were the first humans on the moon.

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The Berlin Wall being destroyed by protestors

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November 9th, 1989:
The Fall of the Berlin Wall, and the reunification of Berlin, signified the decline of Cold War tensions. It was seen as a victory for the West and capitalist democracies.

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March 14th, 1990:
The policies of Mikhail Gorbachev, the last president of the Soviet Union, led to the decline of the USSR. That, in turn, led to the end of the Cold War.

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The Hammer and Sickle of the Soviet Union

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December 25th, 1991:
The dissolution of the Soviet Union, and the creation of the independent Russian state, was the end of the Cold War.