The Sino-Vietnamese War was a brief conflict that occurred in early 1979 between China and Vietnam. China launched an offensive in response to Vietnam's invasion and occupation of Cambodia in 1978, which ended the rule of the Chinese-backed Khmer Rouge. The conflict lasted for about a month, with China withdrawing its troops in March 1979.

The United Front for the Liberation of Oppressed Races was an organization whose objective was autonomy for various indigenous peoples and ethnic minorities in South Vietnam, including the Montagnards in the Central Highlands, the Chams in Central Vietnam, and the Khmer Krom in Southern Vietnam. Initially a political movement, after 1969 it evolved into a fragmented guerrilla group that carried on simultaneous insurgencies against the governments of South Vietnam under President Nguyen Van Thieu and North Vietnam of Ho Chi Minh. Opposed to all forms of Vietnamese rule, FULRO fought against both sides in the Vietnam War against the Soviet-aligned North and the American-aligned South at the same time. FULRO's primary supporter during the 1960s and early 1970s conflict in Southeast Asia was Cambodia, with some aid sent by the People's Republic of China during the period of the Third Indochina War.