Will history show Bush's Iraq war as a blood for oil proposition?

Listening to a conservative radio talk host who seems conservative on many issues-spending-gay right etc...he feels there were many EVIL abusive dictators around the -this particular one was sitting on oil...he seems to be calling it the way it is.... North Korea flaunting nuclear capability....(By the way he said Iran was encouraging us to go into Iraq-Chalbi-to take care of their dirty work)