You guys represent the worst of the "doom and gloom" crowd.
Victory for the US in this situation could equal:
1) Stabilization of duly elected govt in Iraq, containment of terrorist activity by the Iraqi govt with support from the US including a permanent presence of troops (about 10% of what we have there now).
2) Iraqi oil flowing and generating profits, some of which go to fund our presence there. Developed Iraqi economy and employment.
3) Permanent US military presence in the heart of the middle east, with a continuous improvement of facilities and security for our guys.
4) Iran kept in check with forces ready to pounce, if necessary.
5) Builiding of a coalition of US-friendly nations in the region with combined military cooperation and training (Jordan, Egypt, Kuwait, Iraq, Lebanon).