what are you talking about? North Korea is literally the Chinese created Buffer state, if you want to talk about legitimacy, the state of Korea before the China/Russia backed civil war (North Korea somehow had modern Russian MIGs, and most of their army spoke only Chinese) is what because south Korea.
North Korea is an isolationist because it is a despotic dictatorship.
what are you talking about? North Korea is literally the Chinese created Buffer state, if you want to talk about legitimacy, the state of Korea before the China/Russia backed civil war (North Korea somehow had modern Russian MIGs, and most of their army spoke only Chinese) is what because south Korea.
North Korea is an isolationist because it is a despotic dictatorship.