Post WWII - 1940's
The later half of the 1940's began sixty years of tension between the US and the Soviet Union. After World War Two had ended, the US turned its sights to the Communist Soviet Union. The US declared their goal of containing Communism.
MAY 1945 - World War II ends.
MARCH 1947 - President Truman announces the Truman Doctrine
APRIL 1948 - Marshall Plan goes into effect
APRIL 1949 - The North Atlantic Treaty Organization is founded