I read Richard Clarke's book. That book was pendantic, even boring with the level of seemingly unnecessary detail at times. But it shows just how well he knew the personalities through the various Administrations both Democrat and Republican. That guy was one hell of a dedicated civil servant and in the best interests of the United States. His testimony on the Clinton years showed just how much respect Clinton had for his opinions, recommendations, and his office. It is true that Clinton listened to Clarke and executed on his recommendations, despite the fact the Pentagon was pretty much against fighting Bin Laden at the time. Clinton was serious about the threat of terrorism, far more serious than Bush was in the first 9 months of office where it was completely ignored, also according to Clarke. This is remarkable given that the US had not been attacked (on US soil) during Clinton's time. It showed just how willing Clinton was in making an unpopular move based on seasoned (and real) intelligence. As we know now after 7 years of Bush, this is worth something.
Clarke ought to be running for President.... and I'd vote for him even though he's a Republican. He is truly passionate about defending America.