If Woodward is to be believed, then Powell is truly a very tragic figure. He was opposed to everything that Cheney stood for, yet he ended up using HIS enormous credibility, his integrity, and his good will to put into play the things Cheney wanted and to which he was opposed.
A very weak man.
I'm sure Cheney sleeps well at night as he got what he wanted. Having sold his soul, I wonder if Powell sleeps at all.