Read A River in Darkness: One Man's Escape from North Korea
This was such a captivating yet horrifying memoir. Admittedly, I have limited knowledge about North Korea and its history. Reading the author's first-hand account of the hardships he and his family endured was incredibly illuminating. It's an emotionally heavy read but I still recommend it. 

https://www.goodreads.com/book/show/35404398-a-river-in-darkness