I'm told on the one had we need to get out of Iraq because it's a civil war and civilians are dying, but on the other we need to get involved in Darfar to save the civilians who are dying in that civil war. So you tell me, what's the difference?
And if the reality of Iraq truly is a civil war, then our presence isn't causing the violence (because they are fighting against each other, and not us), but it may well help end it. Just as it would in Darfur.
Consistency in logic has never been a hallmark of the left/lib demographic.