AMERICAblog reports that Rumsfeld had said this morning that he "didn't advocate invasion, [he] wasn't asked."
As AMERICAblog points out, we already know that Colin Powell, the Secretary of State at the time, wasn't asked either.
So we invaded Iraq without the advice or counsel of the Secretary of Defense or the Secretary of State. It was, I suppose, entirely the decision of the president who says he just likes to "go with his gut."
Wonderful.