The Iron Curtain formed the imaginary boundary dividing Europe into two separate areas from the end of World War II

the maintenance of international peace and security, the promotion of the well-being of the peoples of the world, and international cooperation to these ends.

Japan was occupied and administered by the Allies of World War II from the surrender of the Empire of Japan on September 2, 1945

With the Truman Doctrine, President Harry S. Truman established that the United States would provide political, military and economic assistance to all democratic nations under threat from external or internal authoritarian forces

The Marshall Plan was an American initiative enacted in 1948 to provide foreign aid to Western Europe. The United States transferred $13.3 billion in economic recovery programs to Western European economies after the end of World War II.

The Berlin Blockade 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

NATO was the first peacetime military alliance the United States entered into outside of the Western Hemisphere.

China led a successful revolt against the Qing Dynasty, establishing in its place the Republic of China and ending the imperial system.

After three years of fighting, the war ended in a stalemate with the border between North and South Korea near where it had been at the war's beginning.

The Soviet Union and seven of its European satellites sign a treaty establishing the Warsaw Pact, a mutual defense organization that put the Soviets in command of the armed forces of the member states

The Cuban Revolution was a military and political effort to overthrow the government of Cuba between 1953 and 1959. It began after the 1952 Cuban coup d'état which placed Fulgencio Batista as head of state

The Wall was designed to prevent people from escaping to the West from East Berlin.

The Bay of Pigs Invasion was a failed military landing operation on the southwestern coast of Cuba in 1961 by Cuban Democratic Revolutionary Front, consisting of Cuban exiles who opposed Fidel Castro's Cuban Revolution, clandestinely financed and directed by the U.S. government

The Cuban Missile Crisis, also known as the October Crisis in Cuba, or the Caribbean Crisis, was a 13-day confrontation between the governments of the United States and the Soviet Union

The Vietnam War was a long, costly, and divisive conflict that pitted the communist government of North Vietnam against South Vietnam and its principal ally, the United States. The conflict was intensified by the ongoing Cold War between the United States and the Soviet Union.

the ground war was a program labeled Vietnamization. In June 1969 Nixon announced the withdrawal of 25,000 U.S. troops from Vietnam. In September he announced further troop withdrawals, and by March 1970 he was announcing the phased withdrawal of 150,000 troops over the next year

US President Richard Nixon ordered a ceasefire of the aerial bombings in North Vietnam. The decision came after Henry Kissinger, the National Security Advisor to the President, returned to Washington, D.C., from Paris, France, with a draft peace proposal. Combat missions continued in South Vietnam.

Communist forces overran Saigon on 30 April 1975, marking the end of the Republic of Vietnam

The Berlin Wall Speech was delivered by United States President Ronald Reagan in West Berlin on June 12, 1987. The speech is commonly known by a key line from the middle part: "Mr. Gorbachev, tear down this wall!

The fall of the Berlin Wall on November 9, 1989, during the Peaceful Revolution, marked the destruction of the Berlin Wall and the figurative Iron Curtain. It was one of the series of events that started the fall of communism in Central and Eastern Europe, preceded by the Solidarity Movement in Poland

The Revolutions of 1989, also known as the Fall of Communism, was a revolutionary wave of liberal democracy movements that resulted in the collapse of most Marxist–Leninist governments in the Eastern Bloc and other parts of the world.