Cold War Terms

The Cold War (1945–1991)

A global conflict between the United States and the Soviet Union based on ideological differences: capitalism vs. communism. It was characterized by proxy wars, nuclear arms buildup, espionage, and political tension rather than direct warfare between the two superpowers. It shaped global alliances (NATO vs. Warsaw Pact).

The United Nations

Founded in 1945 to replace the League of Nations, the UN aimed to prevent future wars, promote human rights, and encourage international cooperation. Its main bodies include the General Assembly and the Security Council (with veto power for major nations).

The Nuremberg Trials

Held from 1945–1946, these trials prosecuted top Nazi officials for crimes against humanity, war crimes, and genocide. They established the principle that individuals—not just states—can be held accountable for international crimes.

Joseph Stalin

Leader of the USSR who expanded Soviet influence across Eastern Europe after WWII. He created a buffer zone of communist states and ruled through strict authoritarian control, censorship, and political repression.

Harry S. Truman

U.S. president who took office at the end of WWII. He adopted a firm stance against Soviet expansion, implementing containment policies such as the Truman Doctrine and Marshall Plan.

The Yalta Conference (Feb 1945)

Meeting between Allied leaders (U.S., UK, USSR) to plan postwar Europe. Germany was to be divided into zones, and free elections were promised in Eastern Europe—though Stalin later ignored this.

The Potsdam Conference (July 1945)

Final WWII conference where tensions increased. Disagreements over Germany, reparations, and Eastern Europe made it clear that cooperation between the U.S. and USSR was breaking down.

“Iron Curtain” & Winston Churchill

Churchill used the term “Iron Curtain” (1946) to describe the division of Europe into democratic West and communist East. It symbolized the lack of communication and growing hostility.

The Truman Doctrine (1947)

U.S. policy to contain communism by providing economic and military aid to countries threatened by it (first applied to Greece and Turkey). Marked the official start of U.S. Cold War intervention.

Mao Zedong & The Chinese Civil War

A conflict between Chinese communists and nationalists. Mao’s victory in 1949 led to the creation of the People’s Republic of China, greatly expanding global communism and intensifying Cold War fears.

The Korean War (1950–1953)

Started when North Korea invaded South Korea. The U.S. (under the UN) supported the South, while China backed the North. It ended in a stalemate, keeping Korea divided at the 38th parallel.

Kim Il Sung

Founder of North Korea who aimed to unify the peninsula under communism, initiating the Korean War.

Dwight D. Eisenhower

Promoted the idea of massive retaliation (using nuclear weapons if necessary) and worked to contain communism globally.

The Cuban Revolution (1959)

Revolution that overthrew the U.S.-backed dictator Batista. It resulted in Cuba becoming a communist state allied with the Soviet Union.

Fidel Castro

Led Cuba after the revolution; aligned closely with the USSR, making Cuba a key Cold War hotspot.

The Cuban Missile Crisis (1962)

The closest the world came to nuclear war. The USSR placed nuclear missiles in Cuba; the U.S. responded with a naval blockade. The crisis ended when the USSR removed missiles in exchange for U.S. concessions.

John F. Kennedy

Handled the Cuban Missile Crisis with a combination of military pressure and diplomacy.

Nikita Khrushchev

Soviet leader who attempted to expand influence by placing missiles in Cuba but ultimately backed down.

Lyndon B. Johnson

Greatly increased U.S. troop involvement in Vietnam, escalating the conflict.

The Vietnam War (1955–1975)

A long and costly war between communist North Vietnam and U.S.-supported South Vietnam. It became a symbol of Cold War tensions and ended in communist victory.

Ho Chi Minh

Leader of North Vietnam who sought to unify the country under communism.

Richard Nixon

Introduced “Vietnamization” (reducing U.S. troops) and improved relations with China and the USSR (détente).

Leonid Brezhnev

Led the USSR during a period of military buildup and economic stagnation; enforced control over Eastern Europe.

Ronald Reagan

Took a hard stance against communism, increased military spending, and pressured the USSR economically and politically.

The Reagan Doctrine

Policy of supporting anti-communist insurgencies (e.g., in Afghanistan and Latin America) to weaken Soviet influence.

SDI (Strategic Defense Initiative)

A proposed missile defense system designed to intercept nuclear attacks, increasing pressure on the USSR to keep up technologically.

INF Treaty (1987)

Agreement between the U.S. and USSR to eliminate intermediate-range nuclear missiles, reducing Cold War tensions.

Mikhail Gorbachev

Introduced reforms that unintentionally led to the collapse of Soviet control and the end of the Cold War.

Glasnost

Policy allowing greater freedom of speech, transparency, and criticism of the government.

Perestroika

Economic reforms aimed at introducing limited market elements into the Soviet economy.

The Berlin Wall (1961–1989)

Built to stop East Germans from fleeing to the West; its fall symbolized the collapse of communism in Eastern Europe.

1991 Dissolution of the USSR

The Soviet Union officially broke apart into independent nations, ending its role as a superpower.

The Arab-Israeli Conflict

A series of wars and disputes between Israel and Arab nations over territory and national identity, beginning in 1948.

The Six-Day War (1967)

Israel quickly defeated Egypt, Jordan, and Syria, gaining territories like the West Bank and Gaza Strip.

The Camp David Accords (1978)

Peace agreement between Egypt and Israel, marking the first recognition of Israel by an Arab country.

The Suez Crisis (1956)

Egypt nationalized the Suez Canal, leading to invasion by Britain, France, and Israel; showed decline of European power and rise of U.S./USSR influence.

The Iranian Revolution (1979)

Overthrew the pro-Western Shah and replaced him with an Islamic government.

Ayatollah Khomeini

Led Iran after the revolution, establishing a theocratic state opposed to Western influence.

Saddam Hussein

Authoritarian leader of Iraq who invaded Kuwait in 1990.

The Persian Gulf War (1990–1991)

A U.S.-led coalition forced Iraq out of Kuwait, demonstrating U.S. military dominance after the Cold War.