Last Thursday, Mary appeared on the NPR program Fresh Air to be interviewed about her uncle. It's a fascinating program that I highly recommend. You can download that episode for free indefinitely here. She offers a lot of insights into why her uncle is such a sadistic and cruel man.
I'm currently slogging my way through John Bolton's book about Trump, which I don't recommend. Once that's done, I plan to tackle Mary's book and will share my thoughts on it here.