Had we taken all of Iraq, we would have been like a dinosaur in the tar pit - we would still be there, and we, not the United Nations, would be bearing the costs of that occupation. ↗
But the central point is that any campaign against Iraq, whatever the strategy, cost and risks, is certain to divert us for some indefinite period from our war on terrorism. ↗
To sum up, the position we took was that since we didn't know the internal situation in Iraq nor Saddam Hussein, that our best bet was to take counsel from the people who did know him and who did deal with him. ↗