I don't know much about the author or about the book. I would take a close look at his background and whether he actually has good points to make, or if he's just another disgruntled ex-employee with an axe to grind. Although I will say that this statement he makes "While the CIA is unable to run effective human source operations, it has a raptorlike efficiency when it comes to defending itself and its growth," sounds like a ridiculous bit of hyperbole to me. And this idea he has: "...transferring foreign intelligence liaison carried out at U.S. embassies to the State Department. The FBI should take charge of the CIA's domestic activities..." also sound like pretty lame ideas.