While the Marines are destroying Fallujah, the Army has Najav under siege. Bush knows he can't attack the holy city and so he's waiting, hoping that al-Sadr's supporters will fade away. This article reports that al-Sadr's militia may be dwindling, but I'm not sure. Neither, of course, is Bush and his minions and I gotta say, you can read the article as being predictive of a civil war between branches of Shia.
On this slender reed our war machine hangs?