A4s is totally right about the oil, we wouldn't be there in the first place if it weren't there, and that's why we're going to have a hard time leaving.
I think its pretty much fair knowledge that we went to war on false pretext (Saddam's WMD and links to Al-Qaeda were the reasons, not that Saddam was a bad and ruthless ruler, not that Civil Rights violations were occuring, all of which are true, but were not the impetus for action). In keeping with that, the only agenda that we have managed to sucessfully advance is regime change, but the new regime is not exactly in the best situation for a developing government instilled by a foreign power.
To successfully move Iraq forward requires movement both politically and militarily. Security forces have to be protecting a government that they can believe in and that government has to provide for its citizens, in addition to infrastructure, education and other social benefits, security. I'm all for the idea that people should be able to elect their leaders, but if what people want most is to be able to go to work without worrying about being killed, or to get an education or turn on their lights at night, then that might be a good consideration in foriegn policy.
Indonesia under Suharto may be a good example. Supposedly democratic, but not really. Even when he was in power, infrastructure developed, schools were built and people were generally happy, without true democracy. Indonesia is a country with strategic importance and vast resources, but with whom the US was able to trade with fairly openly. No regime changes made, but the people finally were able to push the Suharto regime out and now have better elections and more freedom of speech. As was mentioned earlier, the people have to be the motivator for the process, otherwise its efficacy is very negatively influenced.
So, how this has to do with Iraq and civil war-
A foriegn government is trying to instill democracy on an area where Theocracy is also the preferred form of government. You can have both, but that only really works out when the constituency is not religiously divided. Not exactly what you have in Iraq. Since the US is promoting democracy there, and its not engendered by the people of Iraq, there are going to be problems. If the majority of the people were warring it would be a more serious concern, but as it stands right now its mostly just extreme groups, kinda like if those that wanted abortion totally legal were in an all out war with those that wanted it totally banned. Most people are somewhere in between. All out Civil war will progress if the more moderates are drawn in.
I think that the US has a moral obligation to mitigate the violence in Iraq. How to best accomplish that? well I'm not sure that's in the nature of this thread (nor am I sure exactly how to go about it). Moral obligations do not drive our foriegn policy, though. Economics do, so I suspect that we will be protecting our resources for a little while at least.
@ raptor10
The Idea of Total War is effective, yet very immoral. Take the arguably most successful ethnic cleansing in modern history as an example. It was cited by you as a success. Manifest destiny. We are not supposed to be occupying Iraq, its supposed to be an independent state, so the thrid option would be much more in keeping with our foriegn policy.