Tenet's book is just damming for Tenet on the Iraq war. But what this leaves out is the fact that Tenet and the CIA deliberately withheld and kept secret from the FBI on at least 10 occasions as recorded in the FBI IG report information on Mihdhar and Hazmi, the very information that could have prevented the attacks on 9/11. And while Tenet says this was due to simple mistakes, when you read the FBI IG report it is clear that each time this was done, it was deliberate.

They withheld the very information from the FBI on Hazmi and Mihdhar when they knew a huge al Qaeda attack was about to occur that would kill thousands of Americans, and knew Hazmi and Mihdhar were in the US and were going to take part in this attack.