← Unit 2: Change and conflict (The changing world order, 1945 onwards)
Why did the Cold War alternate between crisis and detente?
Analyse the high-tension period of the Cold War (Berlin 1961, Cuba 1962) and the subsequent move to detente (SALT 1972, Helsinki Accords 1975)
A focused answer to the VCE Modern History Unit 2 key knowledge point on the Cuban Missile Crisis and detente. The Berlin Wall (August 1961), Bay of Pigs (April 1961), Cuban Missile Crisis (October 1962), the establishment of the hotline (1963), partial test ban treaty (1963), Vietnam-era pressures, and detente under Nixon-Brezhnev (SALT I 1972, Helsinki Accords 1975).
Have a quick question? Jump to the Q&A page
What this dot point is asking
VCAA wants you to analyse the high-tension Cold War crises of the early 1960s, the brink-of-war moment in October 1962, and the move to detente from the late 1960s.
Berlin Wall (August 1961)
By 1961, million East Germans had fled to West Berlin (a quarter of East Germany's population). Khrushchev pressured the West to recognise East Germany.
Construction. Night of 12-13 August 1961. Initially barbed wire, then concrete. The Wall stopped the haemorrhage of East German labour. Kennedy: "It is not a very nice solution, but a wall is a hell of a lot better than a war."
Bay of Pigs (April 1961)
US-backed Cuban exile invasion of Cuba failed. Castro's regime consolidated. Castro publicly declared himself a Marxist-Leninist (December 1961).
Cuban Missile Crisis (October 1962)
Soviet missiles deployed. Khrushchev placed medium- and intermediate-range nuclear missiles in Cuba; ostensibly to defend Cuba and to balance US Jupiter missiles in Turkey.
US discovery. U-2 reconnaissance photographs (14 October 1962). Kennedy convened ExComm.
Quarantine. Kennedy announced naval blockade (22 October 1962). Soviet ships turned back; tense standoff for six days.
Brink moment (27 October 1962). Soviet submarine B-59 in the quarantine zone was depth-charged; senior officer Valentin Savitsky authorised a nuclear torpedo strike, vetoed by Vasily Arkhipov. US U-2 shot down over Cuba; pilot Rudolf Anderson killed.
Resolution. Kennedy publicly accepted Khrushchev's first letter (Soviet withdrawal in exchange for US non-invasion pledge). Secretly conceded removal of Jupiter missiles from Turkey. Khrushchev agreed 28 October.
Aftermath
Moscow-Washington hotline (June 1963). Direct teleprinter link between the Kremlin and the White House.
Partial Test Ban Treaty (August 1963). Banned atmospheric and underwater nuclear tests; not underground.
Sino-Soviet split. Khrushchev's compromise was condemned by Mao as betrayal; deepened the ideological rift.
Khrushchev's fall (October 1964). Replaced by Brezhnev (until 1982).
Detente (1969-1979)
Causes. Soviet strategic parity with US (achieved by late 1960s). US bogged down in Vietnam. China's split from USSR offered US opening. European Ostpolitik (West German Chancellor Willy Brandt).
Strategic Arms Limitation Treaty (SALT I, 1972). Caps on intercontinental ballistic missiles and submarine-launched missiles. Anti-Ballistic Missile (ABM) Treaty same year.
Nixon's visit to China (February 1972). Diplomatic rapprochement with PRC; tightened pressure on the USSR.
Helsinki Accords (1 August 1975). -nation conference. Recognised post-war European borders (Soviet gain); included human rights provisions (Basket III) that became a tool for Eastern European dissent.
SALT II (June 1979). Strategic arms limit treaty. Never ratified by US Senate after Soviet invasion of Afghanistan (December 1979).
End of detente (late 1970s - early 1980s)
Soviet invasion of Afghanistan (December 1979). US grain embargo, Olympics boycott. Reagan's "evil empire" rhetoric (1983). Detente formally over by the early 1980s; replaced by the "Second Cold War" until Gorbachev (1985).
In one sentence
The Cuban Missile Crisis (16-28 October 1962) brought the world to the brink of nuclear war, ending with Khrushchev's withdrawal of Cuban missiles in exchange for US guarantees and the secret removal of US Jupiter missiles from Turkey; the crisis produced institutional safeguards (hotline 1963, Partial Test Ban Treaty 1963) and ultimately a decade of detente (SALT I 1972, Helsinki Accords 1975) that ended with the Soviet invasion of Afghanistan (1979).
Past exam questions, worked
Real questions from past VCAA papers on this dot point, with our answer explainer.
Year 11 SACHow close did the Cuban Missile Crisis bring the world to nuclear war?Show worked answer →
A Year 11 response.
Thesis. The Cuban Missile Crisis (16-28 October 1962) brought the world the closest it has come to nuclear war: Soviet nuclear missiles in Cuba could have struck US cities in minutes, the US naval quarantine risked confrontation with Soviet ships and submarines (one of which, B-59, was nearly authorised to fire a nuclear torpedo), and Kennedy's ExComm was divided between negotiation and military strike.
Body 1: The trigger. US U-2 photographed Soviet missile sites in Cuba on 14 October 1962. Kennedy convened ExComm.
Body 2: The crisis. US naval quarantine (announced 22 October). Soviet submarine B-59 (27 October), depth-charged by US destroyers and unable to communicate with Moscow, came within one vote of launching a nuclear torpedo (Vasily Arkhipov's veto prevented it). U-2 shot down over Cuba same day. Khrushchev's letter offering missile withdrawal arrived (26 October), then second letter demanding US Jupiter removal from Turkey (27 October).
Body 3: Resolution. Kennedy accepted the first letter publicly; secretly conceded the Jupiters in Turkey. Khrushchev agreed (28 October) to withdraw the Cuban missiles. Crisis ended without direct combat.
Conclusion. Multiple historians (Robert McNamara, Sergei Khrushchev) have judged the crisis the closest call. The hotline (1963), Partial Test Ban Treaty (1963) and subsequent arms-control culture all responded to the trauma.
Markers reward the dated chronology, the B-59 detail, the secret Jupiter deal, and the lasting institutional response.
Related dot points
- Analyse the origins of the Cold War 1945-1949, including the Yalta and Potsdam conferences, the division of Germany, the Truman Doctrine and Marshall Plan (1947-1948), the Berlin Blockade (1948-1949), and the formation of NATO (1949)
A focused answer to the VCE Modern History Unit 2 key knowledge point on the origins of the Cold War. Yalta and Potsdam, division of Germany, Iron Curtain speech (1946), Truman Doctrine (March 1947), Marshall Plan (June 1947), Berlin Blockade and Airlift (1948-1949), and the formation of NATO (April 1949).
- Analyse the Vietnam War (1955-1975), including the French defeat at Dien Bien Phu (1954), the Geneva Accords, the Tonkin Gulf Resolution (1964), the Tet Offensive (1968), the gradual American withdrawal (1969-1973), and the fall of Saigon (April 1975)
A focused answer to the VCE Modern History Unit 2 key knowledge point on the Vietnam War. French defeat at Dien Bien Phu (1954), Geneva Accords, US advisory deployment, Tonkin Gulf Resolution (1964), Operation Rolling Thunder, Tet Offensive (January 1968), Nixon's Vietnamisation (1969), Paris Peace Accords (1973), and the fall of Saigon (30 April 1975).
- Analyse the end of the Cold War and the collapse of the Soviet Union, including Gorbachev's reforms (glasnost and perestroika from 1985), the revolutions of 1989 in Eastern Europe, German reunification (October 1990), and the dissolution of the USSR (December 1991)
A focused answer to the VCE Modern History Unit 2 key knowledge point on the fall of the USSR. Gorbachev's reforms (glasnost, perestroika from 1985), Solidarity in Poland, fall of the Berlin Wall (9 November 1989), Velvet Revolution in Czechoslovakia, Romanian Revolution, German reunification (October 1990), the August 1991 coup attempt, and the dissolution of the USSR (December 1991).