Charles Krauthammer its the nail on the head in this column Charles Krauthammer: Partisan Clarke

I think that Clarke enjoyed being President Clinton's source for the information Clinton received on terrorism, while knowingly or unknowingly insulating Clinton from criticism that he (Clinton) wasn't listening to his intelligence chiefs. Clinton could make public comments that implied toughness while remaining happily tied down by bureaucratic procedures involving DOJ, State, DOD and the NSC. Clarke blamed NSC chief Rice for his loss of direct access to the President under the Bush Administration. When Clarke did brief the President in a 1:1 meeting, his presentation centered on cyberterror, not bombings or hijackings. Clarke's knowledge of cyberterror has been found wanting by those in the know

Clarke appears to be a thin-skinned bureaucratic bully, skilled in playing and being played as long as he perceives the game is one he can win. However, by "sexing up" his charges against the Bush Administration in his book and before the 9/11 Commission while giving Clinton a pass, he's angered members of the Congressional Leadership enough that they may declassify portions of his testimony before Congress. While further besmirching his credibility--the small amount that remains--he could face Contempt of Congress charges. I find the legal danger somewhat unlikely, but Clarke is likely to wind up wishing he'd played it straight.