BTW there's a French journalist named Regis Debray who helped them formulate this theory (he went to Cuba and worked with them and wrote a book on it called "Revolution in the Revolution?" which acted as a guerrilla handbook) which was really inspiring to New Left radicals like the Weathermen. Well, that didn't work out well either. Debray ended up becoming a conservative (sort of), although a hetorodox one (or something). Anyways, he's a public intellectual in France to this day:
https://firstthings.com/rgis-debray-radical-conservative/