Short answers, pulled from the story.
Winston Churchill delivered the defining speech on the 5th of March 1946 in Fulton, Missouri. He spoke of an iron curtain descending across Europe from the Baltic to the Adriatic.
The Truman Doctrine began in February 1947 as a response to Britain announcing it could no longer fund Greece's civil war. President Harry S. Truman provided $400 million in aid to counter communist insurgents.
The Berlin Blockade lasted from June 1948 until May 1949. It ended when Stalin lifted the blockade after Western powers launched a massive airlift delivering food and fuel to two million residents.
NATO was established through the North Atlantic Treaty signed by twelve nations including Britain, France, and Canada in April 1949. The Warsaw Pact followed in 1955 as a direct response to safeguard Soviet hegemony over satellite states.
Aerial photographs revealed Soviet missile sites installed in Cuba in November 1962 triggering the crisis. Khrushchev withdrew missiles in exchange for a public pledge not to invade Cuba plus a covert agreement removing US missiles from Turkey.
Mikhail Gorbachev became leader of the USSR in 1985 expanding political freedoms contributing revolutions Eastern Bloc. The collapse of the Soviet Union in 1991 marked the end of the Cold War.