The Two Koreas: A Contemporary History by Don Oberdorfer
This seems a well informed and insightful history of the Korean peninsula. The author is a journalist with significant experience of the region. As is often the case journalists are good writer and able to collect the information in a useful way.
It gave me some good insight into Korean history, and the Cold War. It’s quite a turbulent story. I was impressed by the behaviour of President Park Chung Hee, who was the victim of an assassination attempt while giving a speech. He survived, but a bystander was killed and his wife was mortally wounded (to die hours later). Apparently, after order was restored, he resumed his speech. That’s sangfroid.