What does the U.S. need to do in Iraq?

Soldiers in Iraq
Iraqi women walk in front of a U.S. Humvee in the northern village of Sakar near the Syrian border.
Photo by HASSAN AMMAR/AFP/Getty Images

Two leading Republican senators, Chuck Hagel of Nebraska and John Warner of Virginia, have both said the U.S. may need to seek a new course in Iraq. Meanwhile, President Bush has personally assured his Iraqi counterpart that the U.S. has no plan to pull out. What course should America take in Iraq?