The United Front for the Liberation of Oppressed Races (FULRO) was a guerrilla group and political movement that fought against
both North and South Vietnam during the Vietnam War and continuing its guerrilla campaign well after its end, only disarming itself in 1992, it sought independence or autonomy for the non-ethnic Vietnamese indigenous peoples of the central highlands region, such as the Montagnards, Chams, and Khmers
Whenever I hear of proposals like this. my brain demands for a map of it to immediately exist, and now its Wikipedia article mentioned something very relevant:
In 1965, FULRO released maps showing that their ultimate goal was for Montagnard and Cham independence within a revived new Champa state and for Khmers to retake Cochinchina.
[13] It was based in Ratanakiri and Mondulkiri provinces in Cambodia,
[14] and the Central Highlands in Vietnam.
[15]
Does anyone has images of these maps? looking up "FULRO Vietnam map" only brings up this map that looks relevant, and is
maybe one of the maps mentioned on Wikipedia, however, it could just very well be simply an ethnic map rather than a map that was made by the FULRO organization to show the borders of its claimed independent state: