Please use the search bar. As you can imagine, the high profile nature of this has led to many many OoTL posts about it.
https://www.reddit.com/r/OutOfTheLoop/comments/9nlsm2/whats_up_with_the_accusations_of_saudi_arabia/
https://www.reddit.com/r/OutOfTheLoop/comments/9okrn0/whats_going_on_with_jamal_khashoggi/
https://www.reddit.com/r/OutOfTheLoop/comments/9qfile/whats_going_on_with_khashoggi/
https://www.reddit.com/r/OutOfTheLoop/comments/9z3509/whats_the_deal_with_the_relationship_between/