The war plan was incompetent in its rejection of the advice from military professionals and the analysis of the intelligence was incompetent in its conclusion that our soldiers would be welcomed with garlands of flowers and cheering crowds. Thus we would not need to respect the so-called Powell doctrine of overwhelming force.
There was also in Rumsfeld's planning a failure to provide security for nuclear materials, and to prevent widespread lawlessness and looting.
Luckily, there was a high level of competence on the part of our soldiers even though they were denied the tools and the numbers they needed for their mission.

NYU Speech (2004)