The Khmer Krom are ethnically Khmer people living in or from the Mekong Delta, the south western part of Vietnam known in Khmer as Kampuchea Krom. The Khmer Krom people are considered as the Indigenous people of Southern Vietnam and having the oldest extant recorded history of inhabiting in the region. In Vietnam, they are recognized as one of Vietnam's fifty-three ethnic minorities.

Marshal Lon Nol was a Cambodian politician and general who served as Prime Minister of Cambodia twice, as well as serving repeatedly as defence minister and provincial governor. As a nationalist and conservative, he led the military coup of 1970 against Prince Norodom Sihanouk, abolished the monarchy, and established the short-lived Khmer Republic. Constitutionally a semi-presidential republic, Cambodia was de facto governed under a military dictatorship. He was the commander-in-chief of the Khmer National Armed Forces during the Cambodian Civil War. On April 1, 1975, 16 days before the Khmer Rouge captured Phnom Penh, Lon Nol fled to the United States, first to Hawaii and then to California, where he remained until his death in 1985.