The website the article is from is interesting site. I found this Q & A with Stanford scholar Larry Diamond:
http://www.foreignpolicy.com/story/cms.php?story_id=3354

from which this quote was obtained: "I think history will skewer Donald Rumsfeld, Paul Wolfowitz, Douglas Feith, and the whole senior Pentagon leadership. I think we’re learning increasingly that Rumsfeld was working in the preparation for the war, and quite possibly in the way the postwar was planned and envisioned with the vice president. I think it was a pipe dream."

I've not seen this site before but it appears, at first glance, to be as unbiased as anything available. I copied the article posted and will read it tonight.