The North Korean regime doesn't rely on such ideology. Rather, the idea is that Koreans are the world's "true" people, and that only the North Korean regime keeps this faith and keeps their culture away from willing economic and political servitude to the west.
The North Korean regime sees itself as the last bastion of resistance for "the good guys." As far as they're concerned, they're like the rebel alliance in Star Wars. As in Star Wars, their weapons are worn and inferior and their industrial power is dwarfed by that of the evil empire that they fight. Yet they somehow heroically fight on, defying the odds because they are "the good guys."