This is probably the best summary of Robert Collins' new report from the Committee for Human Rights in North Korea (HRNK). The report can be downloaded directly at this link:https://www.hrnk.org/uploads/pdfs/Collins_PyongyangRepublic_FINAL_WEB.pdf
The video presentation from which this report was derived is at this link:
This is one of the most important reports that helps policy makers, strategists, planners, scholars, researchers, human rights activists, and students truly understand the nature of the Kim Family Regime (KFR) (understand as in the Frank Hoffman recommended principle of war understanding - the deep understanding of the culture, politics, security apparatus, economy, etc). One of the things that makes this report so valuable and credible is that Bob Collins was able to not only read primary source documents in Korean that were smuggled out of north Korea he conducted in depth interviews with north Koreans in their language. He has arguably interviewed more north Koreans in their language than any other American in or out of government.
If you could only read one book on north Korea this would be it. Those who wish predict or wish for regime collapse would do well to remember the definition we that developed when writing the first plans for north Korean instability and collapse in the 1990s: regime collapse will occur when the KFR is no longer able to govern (through the party) from the center (Pyongyang) combined with the loss of coherency and support of the military.