"Wilkerson told committee aides that Powell — who has not endorsed Bolton for the U.N. job — would "go down to the bowels of the building" "
Sounds very much like the early leaks about Bush officials in the State and/or CIA buildings, often with Cheney as the pursuer.
Wilkerson's a talky guy. Still for me suspect no. 1 as the first leaker to Novak.
I don't think we have to look very far to see who the "leakers" at the State Department were, do you?