Civil rights and social movements in the Americas post‑1945

Truman, containment and Cold War society

The Korean War and the Americas

Eisenhower, Dulles and the New Look

The Americas and the Vietnam War

US foreign policy from Kennedy to Carter

Cuba in the Cold War

### Truman and containment

When Harry S Truman became president in April 1945, relations with the Soviet Union were worsening over Eastern Europe, Germany and the post-war settlement. **Containment** meant stopping further Soviet or communist expansion. It did not initially mean trying to overthrow governments already under Soviet control.

The Truman Doctrine, announced in March 1947, promised assistance to states threatened by armed minorities or outside pressure. Crises in Greece and Turkey prompted the policy, but it also gave the US a broad ideological justification for intervention. Announced in June 1947, the Marshall Plan used economic reconstruction to reinforce Western Europe against communism. NATO, created in April 1949, added a permanent military commitment.

Containment shaped the Americas in several ways:

- The Inter-American Treaty of Reciprocal Assistance, signed at Rio de Janeiro in 1947, treated an attack on one American state as an attack on all.
- The Organization of American States was created in 1948 to formalize political and security cooperation.
- Washington increasingly viewed Latin American politics through an anti-communist lens. Stability and dependable alignment often mattered more than democratic government or social reform.
- US military aid, training and intelligence cooperation strengthened armed forces across the region.

Supporters saw these measures as collective protection against Soviet penetration. Critics argue that the communist threat in Latin America was initially limited. They also argue that containment let Washington present nationalism, labour activism and land reform as parts of a Soviet-directed movement.

### The rise of McCarthyism

Cold War tension grew after the Soviet atomic test and the communist victory in China in 1949. Espionage cases, including that of Alger Hiss, unfolded from 1948 to 1950. The Korean War, which began in 1950, added to fears that communism was advancing internationally.

Senator Joseph McCarthy attracted national attention in February 1950 when he claimed that communists had infiltrated the State Department. He did not begin the wider anti-communist campaign. Truman had already introduced a federal employee loyalty programme in 1947, and the House Un-American Activities Committee was investigating alleged subversion. McCarthy nevertheless became its most visible figure.

### Domestic effects in the United States

Federal employees underwent loyalty investigations. Teachers, trade unionists, academics and government officials could lose their jobs because of allegations or past associations. The Smith Act was used against Communist Party leaders. The prosecution and 1953 execution of Julius and Ethel Rosenberg for conspiracy to commit espionage showed how severe the political climate had become.

The entertainment industry came under particular pressure. Following the 1947 hearings into Hollywood, studios introduced a blacklist. It denied work to suspected communists and to people who refused to cooperate with investigators. Fear encouraged self-censorship and reduced the range of acceptable political debate.

McCarthy’s influence declined after his televised confrontation with the US Army in 1954 revealed his methods to a mass audience. The Senate censured him in December 1954. The broader anti-communist culture, however, survived his personal fall.

### Effects on foreign policy

Accusations that Truman had “lost China” made officials cautious about appearing weak toward communism. The result was a more militarized form of containment, expressed in the 1950 policy document NSC-68 and in the rapid expansion of defence spending during Korea. Diplomats with specialist knowledge of China were removed or marginalized, which reduced the range of advice available to policymakers.

In the Americas, officials feared being accused of tolerating communism. That encouraged support for anti-communist governments and hostility toward left-wing reform movements. Domestic politics therefore pushed foreign policy into rigid ideological categories, even when local conflicts grew out of inequality, nationalism or opposition to dictatorship.

### Social and cultural impact across the Americas

The Cold War entered everyday life through newspapers, radio, film, schools, churches and civil-defence campaigns. In the United States and Canada, preparations for nuclear attack included warning systems, emergency drills and private fallout shelters. Popular culture repeatedly presented espionage, communist infiltration and nuclear destruction as dangers.

Religious language often contrasted a supposedly Christian hemisphere with atheistic communism. Governments and private organizations promoted anti-communist publications and cultural programmes. Communist and socialist groups developed competing narratives of US imperialism and social revolution.

Cold War pressures also reached labour and education. Anti-communist unions received official encouragement, while unions associated with the left faced exclusion or repression. Universities became sites of government-funded scientific research as well as disputes over political loyalty. Across Latin America, censorship, surveillance and political policing restricted left-wing cultural activity. Writers, artists and students also made anti-imperialism a powerful part of regional culture.

Interpretations differ over whether this mobilization was a reasonable response to Soviet power and genuine espionage or a disproportionate reaction that damaged civil liberties. The two explanations are not mutually exclusive: espionage existed, but allegations were often broader than the available evidence.

### Reasons for US participation

On 25 June 1950, North Korean forces crossed the 38th parallel and invaded South Korea. The Truman administration saw the invasion as a serious threat to the postwar order. It also feared that a failure to respond would encourage further communist expansion. Stopping aggression early therefore became an important reason for intervention.

Because the Soviet Union was boycotting the United Nations Security Council, resolutions condemning the invasion and authorizing military assistance passed without a Soviet veto. The United States fought under UN authority, although it supplied most of the forces. General Douglas MacArthur commanded the UN Command.

The administration viewed the attack as part of an international communist challenge. Kim Il Sung, however, also had his own objective: reunifying Korea by force.

### Participation from the Americas

Canada supported the UN response to the North Korean invasion. It contributed naval vessels, air transport and an army brigade. Canadian troops fought in major actions, including the Battle of Kapyong in April 1951. Canada backed the UN war effort while also taking part in negotiations to end the conflict.

Colombia was the only Latin American state to send an army battalion as well as a naval frigate. By contributing forces to the UN response, the Colombian government demonstrated its anti-communist alignment. Other Latin American governments offered political backing or material assistance but avoided combat commitments. The costs, domestic instability and limited direct threat to their territories made a military role less attractive.

### Military developments

North Korean forces captured Seoul and pushed South Korean and UN troops into the Pusan Perimeter during the summer of 1950. The Inchon landing on 15 September, followed by the recapture of Seoul, turned the war around. UN forces then crossed the 38th parallel and advanced towards the Chinese border.

China entered the war in large numbers from October 1950. UN forces retreated, Seoul changed hands again, and the front eventually stabilized near the 38th parallel. The conflict became a war of attrition, with artillery, patrols and fighting over fortified positions.

MacArthur argued for widening the war against China. Truman, by contrast, wanted to avoid an escalation that could involve the Soviet Union. Truman dismissed MacArthur in April 1951 after MacArthur publicly challenged presidential policy. The episode confirmed civilian control over military command, but it also revealed deep disagreement in the United States over whether containment should remain limited.

### Diplomatic and political outcomes

Armistice negotiations began in July 1951 but stalled over disagreements about the repatriation of prisoners of war. The armistice signed at Panmunjom on 27 July 1953 created a demilitarized zone near the 38th parallel. It stopped the fighting without creating a peace treaty or reunifying Korea.

The war preserved South Korea and showed that the United States would use military force to enforce containment. It also led to major increases in US defence expenditure, strengthened NATO and accelerated the rearmament of Western allies. US forces remained in South Korea after the war.

For Canada, participation improved its standing as a supporter of the United Nations. It also confirmed Canada’s preference for coalition warfare and limits on escalation. Colombia developed closer military ties with Washington, while returning officers brought combat experience into the Colombian armed forces.

The war deepened Cold War polarization across the Americas. Governments expanded anti-communist security measures, and US policymakers gave more attention to the possibility of communist advances outside Europe. One interpretation sees the intervention as successful collective security because South Korea survived. Another argues that the advance into North Korea turned a defensive operation into an attempt at reunification, provoking Chinese intervention and prolonging the conflict.

### Characteristics and reasons for the New Look

Dwight D Eisenhower became president in January 1953, with John Foster Dulles serving as secretary of state. Their **New Look** aimed to contain communism without paying indefinitely for enormous conventional forces.

Its main characteristics were:

- reliance on nuclear weapons and the threat of massive retaliation;
- deterrence through the possibility of an overwhelming response;
- alliance systems that shared the burden of containment;
- covert action, especially through the Central Intelligence Agency;
- psychological warfare and propaganda;
- willingness to approach the edge of war, commonly described as brinkmanship.

The policy developed for strategic and economic reasons. The Soviet Union possessed nuclear weapons, communist governments controlled China and North Korea, and the Korean War had demonstrated the cost of prolonged conventional combat. Eisenhower also wanted to limit federal expenditure. He believed nuclear deterrence could provide greater military power at a lower cost.

Dulles used stronger public language than Truman, including references to “liberation” and massive retaliation. In practice, the administration generally continued containment instead of trying to overthrow Soviet control in Eastern Europe. Its response depended on the circumstances; it did not automatically use nuclear weapons.

### Application in the Americas

The administration saw Latin America as a vital US security zone. At the Caracas Conference of 1954, the United States secured support for a declaration opposing international communism in the hemisphere. This created a regional framework for resisting its spread.

Guatemala provided the clearest application. President Jacobo Árbenz’s agrarian reform affected land owned by the United Fruit Company, while communists influenced his political coalition. The Eisenhower administration viewed these developments as a Cold War threat. In June 1954, the CIA-backed operation PBSUCCESS supported Carlos Castillo Armas’s invasion. Radio propaganda and diplomatic pressure accompanied the operation, along with the threat of direct intervention. Árbenz resigned on 27 June.

The operation seemed to show that covert action could remove an unfriendly government cheaply, without a major US invasion. However, evidence of direct Soviet control was weak. Economic interests, opposition from local elites and fears of independent nationalism all operated alongside anti-communism.

Eisenhower initially supported the Cuban government of Fulgencio Batista because it was anti-communist and protected US strategic and economic interests. After Fidel Castro’s victory in January 1959, relations deteriorated because of executions, land reform and the nationalization of property. Washington reduced Cuba’s sugar quota, imposed trade restrictions and authorized covert plans against Castro. Cuba responded by moving closer to the Soviet Union. The United States broke diplomatic relations in January 1961.

### Short-term impact

Guatemala gave Washington a rapid tactical success: Árbenz was removed and an anti-communist regime was installed. The operation reassured conservative governments and demonstrated the reach of US intelligence. It also encouraged later administrations to overestimate how reliably covert intervention would work.

US military and economic support strengthened anti-communist governments across the region. Security concerns, however, often took priority over democratic reform and social inequality. Washington’s links with dictators and military elites increased resentment among nationalists, students and the political left.

In Cuba, pressure failed to dislodge Castro. Instead, it helped move the revolution towards the Soviet Union. This exposed a central limitation of the New Look: economic pressure and covert action could intensify the alignment they were intended to prevent.

### Long-term impact

The Guatemalan coup weakened democratic institutions and was followed by decades of political repression and conflict. More broadly, it set a precedent for covert interference against governments considered dangerous to US interests.

The Cuban Revolution created the first enduring communist government in the Americas. By 1961, hostility between Cuba and the United States had become a major hemispheric conflict inherited by Kennedy. Revolutionary Cuba also provided a model for sections of the Latin American left.

Defenders of Eisenhower’s approach stress that it maintained US strategic dominance without another Korea-scale war. Critics argue that its apparent short-term economy produced long-term political costs: anti-Americanism, weakened democratic legitimacy and a pattern of treating domestic reform as foreign-directed subversion.

### Reasons for US involvement

US involvement grew step by step rather than following a single decision. In 1950, Truman recognized the French-backed State of Vietnam and sent aid to France for its war against the communist-led Viet Minh. The policy reflected containment, anxiety about communist China and the belief that a French defeat would weaken the Western position in Asia.

The French defeat at Dien Bien Phu in 1954 led to the Geneva settlement, which temporarily divided Vietnam at the 17th parallel. Eisenhower backed Ngo Dinh Diem’s anti-communist government in South Vietnam. He also used the “domino theory” to argue that the fall of one Asian state might put others at risk. The United States supplied money, equipment and military advisers, although it did not sign the Geneva agreements.

Kennedy increased the advisory presence from roughly 900 personnel in 1960 to more than 16,000 by 1963. US personnel trained South Vietnamese forces, took part in counterinsurgency and supported programmes such as the Strategic Hamlet scheme. Diem’s repression, the Buddhist crisis and military failures weakened his government. The United States accepted the November 1963 coup, although it did not directly carry it out. Diem was killed in the coup.

### Escalation under Johnson

Lyndon B Johnson inherited an unstable South Vietnam. He feared that withdrawal would damage US credibility and leave him open to domestic accusations of weakness. After reported attacks on US ships in the Gulf of Tonkin in August 1964, Congress passed the Gulf of Tonkin Resolution. This gave Johnson broad authority to use force.

Operation Rolling Thunder began in 1965 as a sustained bombing campaign against North Vietnam. Large numbers of US ground combat troops arrived, while General William Westmoreland pursued a war of attrition based on search-and-destroy operations and enemy casualty estimates. By 1968, troop strength had exceeded 500,000.

The United States had overwhelming firepower, but it struggled to turn that advantage into political control. North Vietnam and the National Liberation Front could replace their losses, use supply routes through Laos and Cambodia, and draw on nationalism as well as communism. The South Vietnamese government continued to depend on US support.

### Tet and withdrawal

The Tet Offensive began in January 1968, with attacks across South Vietnam. Communist forces suffered heavy losses, making the offensive a military setback, and failed to trigger a general uprising. Politically, though, Tet challenged official claims that victory was close and widened the US credibility gap.

Richard Nixon took office in 1969 and introduced Vietnamization. US troops would withdraw while South Vietnamese forces took on more responsibility. At the same time, Nixon widened the air war and authorized operations in Cambodia and Laos. These actions aimed to disrupt communist supply networks and pressure North Vietnam into negotiations.

The Paris Peace Accords were signed in January 1973. US combat forces left, prisoners of war were released and a ceasefire was declared. North Vietnamese forces, however, remained in the South. Congress increasingly restricted further US military action. Saigon fell to North Vietnamese forces on 30 April 1975, bringing the South under communist control. Vietnam was formally reunified on 2 July 1976.

### Domestic effects in the United States

The war produced growing political and social division. The military draft placed unequal burdens on young men, particularly those without access to college deferments. African American leaders questioned why Black soldiers were fighting abroad while racial injustice continued at home. War expenditure also competed with Johnson’s Great Society programmes and contributed to inflation.

Students, clergy, civil-rights activists, veterans and elected politicians all took part in the anti-war movement. The 1968 Democratic National Convention in Chicago revealed intense conflict between protesters and police. Nixon’s Cambodian operation led to further demonstrations. In May 1970, National Guard troops killed four students at Kent State University.

Television reporting and investigative journalism brought battlefield violence and official contradictions into public view. The release of the Pentagon Papers in 1971 deepened distrust of government. The Watergate crisis was separate from the origins of the war, but it further weakened Nixon’s authority during the conflict’s closing stages.

The conflict also encouraged Congress to reassert its powers. The War Powers Resolution of 1973 attempted to limit a president’s ability to sustain military action without congressional authorization. It created a lasting reluctance to enter prolonged overseas conflicts without clear objectives and public support.

### Canadian non-support

Canada did not send combat troops to Vietnam. In a 1965 speech, Prime Minister Lester B Pearson called for a pause in the bombing, which provoked an angry response from Johnson. Pierre Trudeau’s government recognized the People’s Republic of China in 1970 and maintained an independent diplomatic position.

Canada’s non-support did not amount to complete neutrality. Canada belonged to the International Commission for Supervision and Control established after Geneva. It also maintained close economic and defence relations with the United States and exported materials that entered US defence production. Canadian diplomats attempted mediation as well.

Canada admitted many US draft resisters and military deserters. Their arrival influenced Canadian universities, journalism and political culture. Canada therefore avoided formal belligerency while remaining economically and strategically connected to the United States.

### Latin American protest

Many Latin American governments resisted requests for direct military participation. Mexico emphasized non-intervention, and diplomatic relations with Vietnam were established in 1975. Cuba gave political and material support to North Vietnam and presented the war as a struggle against US imperialism.

Across Latin America, student organizations, trade unions and left-wing parties organized demonstrations. They linked Vietnam to their own opposition to US influence. The war strengthened the belief that Washington used anti-communism to suppress national liberation. Governments friendly to the United States often restricted these protests, exposing a divide between official diplomacy and public activism.

Interpretations of the US defeat focus on different factors. Some emphasize flawed strategy and political restrictions on military power. Others see the central failure as political: the United States could not build a legitimate and durable South Vietnamese state. Another interpretation highlights North Vietnamese persistence and its ability to combine conventional warfare, guerrilla operations and diplomacy.

### Kennedy and the Alliance for Progress

John F Kennedy entered office in 1961 as concern grew that the Cuban Revolution could inspire similar movements elsewhere. His policy combined reform, economic development and counterinsurgency, while leaving room for covert force.

Launched in 1961, the Alliance for Progress proposed a ten-year programme of US aid alongside Latin American self-help. It aimed to promote economic growth, land and tax reform, better education and housing, stronger democratic institutions and reduced inequality. Kennedy hoped peaceful reform would remove the conditions that allowed revolutionary movements to win support.

The programme financed schools, housing, health projects and infrastructure. It also put social reform on the inter-American agenda. Results, however, varied considerably. Latin American governments often resisted land redistribution and progressive taxation. US political priorities limited aid, while population growth reduced the impact of economic gains. After 1963, Washington continued to combine development assistance with a strong focus on security.

The Alliance contained a basic contradiction. It called for democracy and structural reform, yet the United States continued to work with conservative elites and anti-communist armed forces. Supporters see it as a serious attempt at modernization. Critics view it as an effort to stabilize US influence without changing unequal social structures.

### Nixon, covert operations and Chile

Richard Nixon and his national security adviser, Henry Kissinger, saw the 1970 election of Marxist Salvador Allende in Chile as both a strategic and ideological threat. Allende had come to power constitutionally and pursued a peaceful transition to socialism through nationalization, land reform and expanded social programmes.

Nixon authorized covert measures to stop Allende from taking office or weaken his government. The CIA financed opposition political activity and media campaigns while maintaining contact with coup plotters. An initial attempt to encourage military intervention contributed to the circumstances in which army commander René Schneider, who defended constitutional procedure, was kidnapped and killed in October 1970. Congress nevertheless confirmed Allende as president.

After Allende took office, Washington applied economic pressure and supported opposition groups. Domestic factors also played a major part in the crisis. Polarization, inflation, strikes, conflict over nationalization and confrontation between the president and Congress destabilized Chile. The coup cannot therefore be attributed entirely to Washington, but the impact of US intervention cannot be ignored either.

On 11 September 1973, Chilean armed forces led by General Augusto Pinochet overthrew Allende, who died during the coup. The military regime that followed dismantled democratic institutions and carried out extensive repression. The United States did not direct the coup itself. However, covert action and economic pressure had undermined Allende and encouraged his opponents.

In the short term, Nixon prevented a Marxist government from consolidating power and protected US strategic influence. Over the longer term, the association with Pinochet damaged US claims to defend democracy and became a powerful source of anti-American criticism.

### Carter and human rights

Jimmy Carter, president from 1977, made human rights a declared part of US foreign policy. His administration criticized torture, political imprisonment and disappearances. It also tried to distinguish US policy from the automatic support previously given to anti-communist dictatorships.

The policy involved public criticism, diplomatic pressure and restrictions on some military or economic assistance. It encouraged human-rights organizations and relatives of victims in states such as Argentina and Chile. It also signalled that anti-communism did not automatically excuse repression.

Application was inconsistent. Strategic interests, pressure from Congress and concern about Soviet or Cuban influence continued to shape decisions. Governments could also dismiss Carter’s criticism as interference. Supporters argue that human rights introduced an important moral and legal standard. Critics stress that selective enforcement weakened its credibility.

### The Panama Canal Treaties of 1977

The United States controlled the Panama Canal Zone under the 1903 treaty with Panama. By the 1960s, Panamanian nationalism had made continued US control increasingly difficult to defend. Riots in January 1964, in which Panamanians and US soldiers were killed, showed how urgently the issue needed to be renegotiated.

Carter and Panamanian leader Omar Torrijos signed two treaties on 7 September 1977. The Panama Canal Treaty provided for the transfer of the canal to Panama by the end of 1999. The Neutrality Treaty guaranteed the canal’s permanent neutrality and continued accessibility.

Ratification met strong opposition in the United States. Opponents argued that Carter was surrendering a strategically valuable asset. The Senate approved the treaties in 1978 after a close debate. For Panama and much of Latin America, the settlement removed a prominent symbol of unequal US power.

The treaties were a major diplomatic success. They reduced regional resentment while protecting access to the canal. They also showed Carter’s preference for negotiation and a less openly dominant relationship with Latin America. Broader security and economic inequalities in inter-American relations, however, remained.

### Overall changes and continuities

From Kennedy to Carter, methods changed more than the central objective: preserving US influence and limiting hostile powers in the hemisphere. Kennedy emphasized development and counterinsurgency. Nixon depended heavily on covert pressure and geopolitical calculation. Carter gave greater prominence to human rights and negotiated the return of the Panama Canal.

The period combined change with continuity. Democracy and reform were repeatedly announced as goals, but anti-communist security and US strategic interests often took priority. Policy successes were frequently immediate and tactical, while their political and reputational costs emerged over a longer period.

### Cuba before the revolution

Cuba’s Cold War policies emerged from domestic inequality, political repression and its close economic ties with the United States. Fulgencio Batista seized power in a coup on 10 March 1952, suspended constitutional government and ruled with military backing. US businesses controlled major interests in sugar, utilities and other sectors. Corruption and poverty in the countryside further damaged the regime’s legitimacy.

Fidel Castro’s failed attack on the Moncada Barracks on 26 July 1953 marked the beginning of his rise as a revolutionary leader. After imprisonment and exile, Castro and the 26th of July Movement returned aboard the *Granma* in December 1956. Guerrilla warfare in the Sierra Maestra, urban resistance and falling army morale gradually weakened Batista’s position. Batista fled on 1 January 1959.

The revolution was not initially presented as a straightforward Soviet-directed communist takeover. It drew support from opposition to dictatorship, nationalism, demands for political reform and anger over social inequality. The later confrontation between the US and Cuba changed its ideological direction.

### Reasons for domestic policy

Castro’s government aimed to dismantle Batista’s political order, redistribute wealth and free Cuba from US influence. It also had to secure its power against domestic opponents and foreign-backed attempts to overthrow it.

The Agrarian Reform Law of May 1959 placed limits on large estates and transferred land to the state or to smaller farmers. The government lowered rents, widened access to health care and education, and nationalized major Cuban and foreign-owned enterprises. A mass literacy campaign in 1961 greatly expanded basic education and helped bring young people behind the revolution.

Many workers and peasants supported these measures. Landowners, businesses, parts of the middle class and US investors saw them as a threat. Political pluralism narrowed as independent newspapers were closed or brought under control, opposition organizations were suppressed, and many Cubans left for the United States. Created in 1960, the Committees for the Defense of the Revolution mobilized support in neighbourhoods while extending surveillance.

In 1961, Castro publicly described the revolution as socialist. Revolutionary organizations were gradually brought together, a process that culminated in the Communist Party of Cuba in 1965. The economy came to rest on central planning and state ownership.

### Implementation and results of domestic policy

The government introduced change through national legislation, mass organizations and the state security apparatus. Education and health programmes reached rural communities that had previously received few services. Rationing, introduced in 1962, was intended to distribute scarce goods more evenly.

The economic results were mixed. Cuba remained dependent on sugar exports despite attempts to diversify. The departure of skilled workers and managers also caused disruption. The US embargo cut Cuba off from its traditional market and supplies, which increased its reliance on Soviet trade, credit and oil.

The failed attempt to produce ten million tonnes of sugar in 1970 revealed the limits of mass mobilization and centralized targets. During the 1970s, Cuba moved towards more regular Soviet-style planning and became more closely tied to the Soviet economic system.

Supporters point to advances in literacy, health and social equality. Critics focus on authoritarian rule, imprisonment, exile and weak consumer production. These results were linked: centralized control and mass mobilization made rapid social programmes possible, but they also removed independent institutions that could challenge government decisions.

### Reasons for foreign policy

Cuban foreign policy sought to protect the revolution, resist US power and support revolutionary or anti-colonial movements abroad. The Soviet alliance offered military protection, oil, markets and economic assistance. It also narrowed Cuba’s freedom of action because the country became dependent on a superpower.

Relations with Washington worsened during 1959–1960. Cuba nationalized US property, while the United States cut the Cuban sugar quota and imposed trade restrictions. Cuba built economic and military links with the Soviet Union, and anti-Castro exiles organized in the United States.

### The Bay of Pigs and Missile Crisis

On 17 April 1961, a CIA-trained exile force landed at the Bay of Pigs. Kennedy refused to provide direct US air support, and Cuban forces defeated the invasion within three days. The victory strengthened Castro’s position at home, weakened his opponents and moved Cuba closer to the Soviet Union.

In 1962, Soviet leader Nikita Khrushchev secretly stationed nuclear missiles in Cuba. He wanted to defend Cuba, strengthen the Soviet strategic position and respond to US missiles near Soviet territory. After US reconnaissance discovered the sites, Kennedy announced a naval quarantine on 22 October.

The crisis ended when Khrushchev agreed to remove the missiles in exchange for a public US pledge not to invade Cuba. The United States also privately agreed to remove Jupiter missiles from Turkey. Cuba was shielded from direct US invasion, but Castro was left out of the final negotiations. The episode showed both the advantages and the limits of Soviet support.

### Revolutionary foreign policy

Cuba supported revolutionary movements in Latin America by providing training, political encouragement and limited material aid. Ernesto “Che” Guevara tried to spread guerrilla revolution and was captured and killed in Bolivia in October 1967. His failure showed that the Cuban experience could not be easily repeated in places where rural conditions, political organization and local support were different.

The Organization of American States excluded Cuba from participation in the inter-American system in 1962. In 1964, the OAS voted for sanctions requiring its members to break diplomatic relations with Cuba, and every member except Mexico did so. Mexico was the important exception. During the 1970s, some governments in the region restored relations, which reduced Cuba’s isolation.

Cuban policy reached beyond the Americas as well. Beginning in late 1975, Cuba sent large military forces to Angola to support the MPLA government against South African intervention and rival movements. Cuba described this as internationalist and anti-colonial assistance, while its opponents viewed it as an extension of Soviet influence. Soviet transport and equipment were essential, but Cuba also followed its own revolutionary ambitions and opposed apartheid.

### Balance of independence and dependence

Cuba survived invasion, covert action, diplomatic isolation and the US embargo. Despite its size, its government became an important Cold War actor, especially through its military and medical involvement abroad.

Yet the Cuban economy became heavily dependent on favourable Soviet sugar purchases, oil and credit. Its foreign policy therefore combined genuine Cuban agency with the limits imposed by alliance. One interpretation sees Cuba mainly as a Soviet client. Another emphasizes that Castro repeatedly pursued regional and African objectives rooted in Cuba’s own revolutionary ideology. The strongest conclusion recognizes both Cuba’s dependence on Soviet resources and its independent ambitions.

Political developments in the United States (1945–1980) and Canada (1945–1982)

History

IB History develops students' understanding of significant historical events, themes, and interpretations across different periods and regions.Students learn to analyze historical sources critically, understand complex historical narratives, and develop sophisticated historical thinking skills.

HL2.16 The Cold War and the Americas (1945–1981)

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