The JUCHE Idea!
I recall under L.F.S Burhnam I studied this theory at the Critchlow Labour College. The lecturer who taught us was a P.N.C. Party stalwart. So you can imagine the enthusiasm he portrayed.
This idea is based on the concept that any nation can become Totally Self Reliant. Which is totally false. Because no nation on this planet has all the resources it needs to survive without importing anything.
Plus, if you live like that, who will trade with you, or buy your goods?
But that is what Kim IL Sung used to indoctrinate his North Korean people, and is being used up to this day.