And in-depth article on the House of Saud’s internal struggles over the last few years that lead to the death of Jamal Khashoggi which may be of interest. I have copied and attached the entire article in case you have difficulty accessing it. I suspect the author, David Ignatius, will have a book out that expands on the subject soon.

The Khashoggi killing had roots in a cutthroat Saudi
The Khashoggi killing had roots in a cutthroat Saudi family feud