The Cold War

The wartime alliance between the United States and the Soviet Union broke apart into a forty-five-year standoff. Proxy wars killed millions in countries that did not start the Cold War, and the contest ended faster than anyone predicted.

1945 to 1991 · 4 parts · 22 lessons · about 3.5 hours

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American and Soviet tanks facing each other muzzle to muzzle at Checkpoint Charlie in divided Berlin, October 1961, a tense armed standoff of the Cold War

Questions this course answers

Four parts, 22 lessons

Part 1 · 1945 to 1949

Origins

The wartime alliance collapsed in four years. Stalin took Eastern Europe ministry by ministry. The United States answered with containment, the Marshall Plan, and NATO. 4 lessons · 29 min
  1. 1

    Yalta and the Broken Alliance

    Roosevelt, Churchill, and Stalin met at Yalta in 1945. The Red Army already held Eastern Europe, and the promises over Poland were left vague on purpose.

    7 min
  2. 2

    The Iron Curtain Descends

    Stalin's communist allies took power in Eastern Europe from inside coalition governments, starting with the police. Czechoslovakia fell in one week in 1948.

    7 min
  3. 3

    Containment: Truman Doctrine, Marshall Plan, NATO

    Kennan's telegram from Moscow gave the United States its first grand strategy since the Monroe Doctrine. The Truman Doctrine, Marshall Plan, and NATO followed.

    7 min
  4. 4

    1949: The Year Everything Changed

    In 1949 NATO was signed, the Berlin Blockade ended, the Soviet Union tested an atomic bomb, and Mao took power in China. The world was split into two camps.

    8 min
Part 2 · 1950 to 1962

To the Brink

From 1950 to 1962 the Cold War came close to nuclear war. These years brought the Korean War, McCarthyism, the arms race, the Berlin Wall, and the Cuban Missile Crisis. 7 lessons · 68 min
  1. 5

    The Korean War: When the Cold War Burned

    North Korea invaded South Korea in 1950 with Stalin's approval. Three million Koreans died, and the armistice line is still manned, with no peace treaty.

    9 min
  2. 6

    McCarthyism and the American Home Front

    The mix of real Soviet spies and false accusations made almost any charge plausible. Joseph McCarthy himself never identified a single previously unknown spy.

    9 min
  3. 7

    After Stalin: The Secret Speech and Hungary 1956

    In 1956 Khrushchev denounced Stalin. That autumn Hungary tried to leave the Warsaw Pact, and Soviet tanks crushed the revolt while Eisenhower stayed out.

    10 min
  4. 8

    The Space Race and the Arms Race

    The Soviet Union led the early space race with Sputnik and Gagarin. Its arms race with the United States produced Mutually Assured Destruction.

    10 min
  5. 9

    The Spy Game: CIA, KGB, and the Defectors

    The Cambridge Five spied for the Soviet Union inside British intelligence. Soviet colonel Oleg Penkovsky's documents told Kennedy what was in Cuba.

    10 min
  6. 10

    The Berlin Wall

    By 1961, about 2.5 million East Germans had fled west through Berlin. On August 13, East German troops closed the border, and the wall stood for 28 years.

    10 min
  7. 11

    Thirteen Days: The Cuban Missile Crisis

    In October 1962 a Soviet submarine officer, Arkhipov, vetoed firing a nuclear torpedo. Kennedy and Khrushchev cut a deal neither could publicly admit.

    10 min
Part 3 · 1960 to 1975

The Global Cold War

From 1960 to 1975 China broke with the Soviet Union, the CIA helped topple elected governments, and wars killed millions in Vietnam, Africa, and Latin America. 6 lessons · 64 min
  1. 12

    The Sino-Soviet Split

    The communist monolith was always a fiction. By 1969 the Soviet Union and China were shooting at each other, and by 1972 Mao was hosting Nixon in Beijing.

    11 min
  2. 13

    The CIA's Secret Wars

    From Iran in 1953 to Chile in 1973, the CIA worked to overthrow elected governments. The costs, such as the Iranian Revolution, came decades later.

    11 min
  3. 14

    Vietnam: America's Longest Defeat

    The United States won most battles and still lost the war. North Vietnam's strategy was to outlast American politics rather than defeat American firepower.

    11 min
  4. 15

    1968: The Year the World Cracked

    In 1968 crises hit Vietnam, the United States, France, Czechoslovakia, and Mexico at once. Few uprisings won, and most led to a conservative backlash.

    11 min
  5. 16

    Proxy Battlefields: Africa and Latin America

    Cuban tanks fought South African tanks in Angola. Operation Condor disappeared some 30,000 South Americans. The worst costs fell on populations with no say.

    11 min
  6. 17

    The Non-Aligned Movement

    Twenty-nine Asian and African nations met at Bandung in 1955. The Non-Aligned Movement that followed never united, but its ideas still shape the Global South.

    9 min
Part 4 · 1969 to 1991

Détente, Reheat, Endgame

Détente eased American-Soviet rivalry until 1979. Reagan, Gorbachev, and the 1989 revolutions wound the Cold War down, and the Soviet Union dissolved in 1991. 5 lessons · 58 min
  1. 18

    The Cultural Cold War

    Jazz tours, blue jeans, and Radio Free Europe reached people behind the Iron Curtain. Eastern European dissidents cite culture more often than missiles.

    11 min
  2. 19

    Détente: Nixon, Brezhnev, and the SALT Years

    In SALT I, Nixon and Brezhnev capped missile launchers but not warheads. At Helsinki, Brezhnev signed human-rights pledges that later helped dissidents.

    11 min
  3. 20

    1979: The Year the Cold War Reheated

    In 1979 the Iranian Revolution, the Soviet invasion of Afghanistan, and the American hostage crisis in Tehran ended a decade of détente.

    11 min
  4. 21

    Reagan's Cold War

    Reagan spent more on the military than any president since FDR, then negotiated with Gorbachev. Soviet generals later rated 1983 more dangerous than 1962.

    13 min
  5. 22

    1989-1991: How It Ended, and Why It Still Defines Today

    The Berlin Wall opened in 1989, and the Soviet Union dissolved in 1991. Gorbachev chose not to use force, and the end came faster than anyone predicted.

    12 min

Lessons you can finish in one sitting.

Each lesson tells one part of the story and explains why it happened, with maps, images and quotes from the sources. A few questions at the end check that it stuck, and the key facts go into the course's flashcards.

  • 7 to 13 minutes a lesson
  • Three questions after each lesson
  • 154 flashcards for this course
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