Sangkum era Later political career The National United Front of Kampuchea (French: Front uni national du Kampuchéa or Front uni national khmer, FUNK; Khmer: រណសិរ្សរួបរួមជាតិកម្ពុជា, Rônâsĕrs Ruŏbruŏm Chéatĕ Kâmpŭchéa) was an organisation formed by the deposed then Chief of State of Cambodia, Norodom Sihanouk, in 1970 while he was in exile in Beijing.

The front was supposed to be an umbrella organization of forces that opposed Lon Nol's seizure of power; however, the Communist Party of Kampuchea/Khmer Rouge guerrillas formed the basic military force of the Front.

[1] The territories controlled by the guerrillas were nominally led by a Royal United National Government of Kampuchea (GRUNK).

[3] The possibility to exploit peasant masses' traditional adherence to Cambodia's monarchs greatly helped the Khmer Rouge to recruit members to the front.

[4] The deposed king remained a figurehead of the front and nominal head of state until Khmer Rouge victory over Lon Nol in 1975.