Frank I agree with some of the objectives you attribute to US for having troops in Iraq. But I don't think they are too keen to impose Christainity. The Christianity thing is something that has benefitted Bush in his own back garden. But I don't think Rumsfeld, Condy or the other hawks are one bit pushed baout Religion of any kind - as long as the American influence is dominant. Any kind of a local puppet who will play game will suit. That's the way it has been since the Shah and since that idiotic King Idris in Libya.
And while Ghaddafi may be a dictator, he has made some astute remarksks like his sum up of US Gulf engagement under Bush Senior :Do you seriously think that if Kuwait was producing carrots instead of oil that the America would be one bit interested in their "freedom" ?