Jamal Khashoggi was a prominent Saudi journalist who was close to the inner circle of the Saudi royal family at one time, but decided to break away from them. There is good reason to believe that he knew all about the Saudi involvement in 9/11 and would have exposed all the culprits (including the Americans). He became critical of the current regime and was told to shut up, but since he disregarded that, he had to be executed.