Sino-Vietnamese War

• 1. Introduction

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  The Sino-Vietnamese War lasted roughly a month, yet its consequences shaped East Asia for the next decade. On the 17th of February 1979, roughly 200,000 Chinese troops crossed into northern Vietnam, backed by Type 59, Type 62, and Type 63 tanks. It was the People's Liberation Army's first major combat operation since the end of the China-India War in 1962. China called it a punitive action. Vietnam called it an invasion. Singapore's Prime Minister Lee Kuan Yew would later write that it changed the history of East Asia. How a conflict so brief could carry so much weight is the question this documentary sets out to answer.

• 2. Decades of Entanglement

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  France invaded Vietnam in September 1858, and within three decades had absorbed all of Vietnam, Laos, and Cambodia into its colonial sphere. Rebellions were common up to World War I, and revolutionary figures such as Ho Chi Minh emerged from that ferment. On the 9th of March 1945, the Japanese overthrew the Vichy French administration and installed their own puppet government, the Empire of Vietnam. Their surrender that August left a power vacuum. Nationalist Chinese forces entered the country on the 14th of September 1945 to disarm Japanese troops north of the 16th parallel. British forces took the south. On the 6th of March 1946, Ho Chi Minh signed an agreement allowing French forces to replace those Nationalist Chinese troops, in exchange for French recognition of the Democratic Republic of Vietnam as a free republic within the French Union. British forces departed on the 26th of March 1946. By November of that year, the French had ousted the Viet Minh from Hanoi, and the first Indochina War began. The Geneva Conference on the 20th of July 1954 produced a political settlement signed with support from China, the Soviet Union, and Western European powers. The United States did not sign, and swiftly moved to back South Vietnam. That refusal set the stage for everything that followed.

• 3. The Sino-Soviet Fracture

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  After Joseph Stalin died in March 1953, Chinese-Soviet relations began to deteriorate. Mao Zedong believed the new Soviet leader Khrushchev had made a serious error in his Secret Speech denouncing Stalin in February 1956, and Mao criticized the Soviet interpretation of Marxism-Leninism, particularly Khrushchev's advocacy for peaceful coexistence. This rupture became the Sino-Soviet split of 1956-1966, and it reshaped the entire conflict. As many as 1.5 million Chinese troops were eventually stationed along the Sino-Soviet border in preparation for a potential war against the Soviet Union. Vietnam, rather than siding with China in that dispute, drew closer to Moscow. By 1977, Soviet military aid to Vietnam stood at between $75 million and $125 million. By 1978, it had surged to between $600 million and $800 million. On the 28th of June 1978, Vietnam joined the Soviet-led Council for Mutual Economic Assistance. On the 3rd of November 1978, Vietnam and the Soviet Union signed a 25-year mutual defense treaty, which Chinese leaders described as making Vietnam the linchpin in the Soviet drive to contain China. Following the death of Mao in September 1976 and the ascent of Deng Xiaoping, China had already pivoted toward collaboration with the United States against the Soviet Union. A Vietnamese state tightly bound to Moscow now sat on China's southern border. In China's view, encirclement was becoming real.

• 4. Cambodia as the Spark

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  Khmer Rouge leader Pol Pot established Democratic Kampuchea on the 17th of April 1975, and China extended extensive political, logistical, and military support to his regime. Vietnam had previously cooperated with the Khmer Rouge, but that relationship collapsed as border clashes multiplied. On the 25th of December 1978, Vietnam invaded Cambodia. By the 7th of January 1979, Vietnamese forces had entered Phnom Penh and the Khmer Rouge leadership had fled to western Cambodia. China's Phnom Penh embassy fled to the jungle with the Khmer Rouge, where it remained for fifteen days. Vietnam installed Heng Samrin as head of a new Cambodian government. For China, this was not only a strategic setback; it confirmed what Beijing had feared: Vietnam was pursuing a regional policy that China viewed as hegemonic, and the Soviet Union was enabling it. Deng Xiaoping traveled to Washington on the 29th of January 1979, informing President Carter that China could not accept Vietnam's wild ambitions and was prepared to teach it a lesson. According to National Security Advisor Zbigniew Brzezinski, Carter reserved judgment, which Chinese diplomats interpreted as tacit approval. Deng returned to China on the 8th of February 1979 and made the final decision to invade the following day.

• 5. One Month of War

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  On the 17th of February 1979, the PLA entered northern Vietnam along two axes. The eastern direction, commanded by Xu Shiyou, targeted Cao Bang, Lang Son, and Quang Ninh Provinces. The western direction, under Yang Dezhi, pushed toward Ha Tuyen, Hoang Lien Son, and Lai Chau Provinces. The PLA advanced roughly 15-20 kilometres into Vietnam, but quickly lost momentum. Vietnam avoided committing its best divisions, holding back some 300,000 troops for the defense of Hanoi while relying on border militias and guerrilla tactics. After capturing the northern heights above Lang Son, the PLA surrounded the city and paused, hoping to draw Vietnamese reinforcements away from Cambodia. That was the central strategic ploy: Deng did not want to risk escalating tensions with the Soviet Union by pushing deeper. After three days of house-to-house fighting, Lang Son fell on the 6th of March. That same day, China declared its punitive mission accomplished. The PLA crossed back into China on the 16th of March, employing a scorched-earth policy during its withdrawal, destroying infrastructure and looting livestock and equipment across Vietnam's northernmost provinces. Both sides declared victory. Henry J. Kenny of the U.S. Center for Naval Analyses noted that most Western writers agreed Vietnam outperformed the PLA on the battlefield, though the seizure of Lang Son did give China the option of advancing toward the Red River Delta and Hanoi. The Chinese force had not seen major combat since the early 1950s, and most of its weapons were obsolete. In contrast, Vietnamese forces were combat-seasoned and equipped with modern arms from both the United States and the Soviet Union.

• 6. The Soviet Calculation

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  Moscow supplied Vietnam with 400 tanks and armored personnel carriers, 500 mortar and air defense artillery pieces, 50 BM-21 rocket launchers, 400 portable surface-to-air missiles, 800 anti-tank missiles, and 20 jet fighters. Between 5,000 and 8,000 Soviet military advisers were present in Vietnam in 1979. The Soviet Pacific Fleet deployed 15 ships to the Vietnamese coast to relay Chinese battlefield communications to Vietnamese forces. Yet the Soviets did not intervene directly. Distances made effective military support nearly impossible, and any reinforcement route would have required crossing territory controlled by China or U.S. allies. Beijing had also promised both Moscow and Washington that the invasion was limited and brief. After U.S. moderation, Moscow adopted a wait-and-see approach. Deng had further reassured Moscow by ordering the Chinese navy and air force to stay out of the conflict. When Beijing kept that promise, Moscow chose not to retaliate. When China completed its withdrawal, Beijing publicly proclaimed that the Soviet Union had broken its numerous promises to protect Vietnam. Former U.S. Secretary of State Henry Kissinger wrote that China succeeded in exposing the limits of Soviet strategic reach, and speculated that the Soviets' desire to compensate for their ineffectuality contributed to their decision to intervene in Afghanistan a year later.

• 7. Casualties and Consequences

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  Casualty figures for the war remain contested. Leaks from Chinese military sources indicated China suffered 6,954 dead. Deputy Chief of the General Staff Wu Xiuquan told a French military delegation that Vietnam suffered 50,000 casualties and China suffered 20,000. Vietnam's state newspaper Nhân Dan claimed more than 10,000 Vietnamese civilian deaths. China lost 3.45 billion yuan in overhead costs, delaying its 1979-80 economic plan. The Chinese held 1,636 Vietnamese prisoners; the Vietnamese held 238 Chinese prisoners. Both groups were exchanged in May-June 1979. In the spring of 1979, Vietnamese authorities expelled approximately 8,000 Hoa people from Hanoi to southern New Economic Zones. A total of 20,468 members were expelled from the Communist Party of Vietnam in 1979 for pro-Chinese sympathies or surrender to advancing Chinese troops. Vietnam did not abandon Cambodia. Vietnamese forces remained there until 1989. Border skirmishes continued throughout the 1980s, including a significant clash in April 1984 and a naval battle over the Spratly Islands in 1988 known as the Johnson South Reef Skirmish. Diplomatic relations between China and Vietnam were not fully restored until November 1991. In 1999, the two countries signed a border pact, with Vietnam ceding to China a portion of land lost during the battle, including the Ai Nam Quan Gate, the traditional border marker and entry point between the two nations. The December 2007 announcement of a planned Hanoi-Kunming highway was described as a landmark in Sino-Vietnamese relations, a road set to cross the very border that once served as a battleground.

• 8. Memory and Culture

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  Chinese rock musician Cui Jian wrote the anti-war song "Last Shot" in 1987, inspired by the conflict. The 1984 Xie Jin film Wreaths at the Foot of the Mountain was the earliest mainland Chinese film to depict the war, framing the Chinese as on the defensive after Vietnamese attacks targeted the city of Nanning. The 1986 film The Big Parade carried veiled criticism. The 2017 Chinese film Youth approached the conflict through the lens of the broader cultural changes taking place in China at the time. On the Vietnamese side, the war was addressed in the 1980 film Dat me (Motherland), directed by Hai Ninh, and in Thi xa trong tam tay (Town at the Fingertips), directed by Dang Nhat Minh in 1982. A 1982 documentary, Hoa dua huong noi dat anh nam (Flowers over Your Grave), directed by Truong Thanh, told the story of a Japanese journalist who died during the war. Patriotic songs produced during the fighting included "Chien dau vi doc lap tu do" ("Fight for Independence and Freedom"), composed by Pham Tuyen. Novelists also responded: Chu Lai's Night of February and Duong Thu Huong's Portrait of My Neighbors were both written in 1979. Deng Xiaoping subsequently used the PLA's poor performance in the conflict to overcome internal resistance to further military reforms, making the war a catalyst for the modernization of the Chinese armed forces.