Grand Ayatollah Sistani is asking for US troops to leave Najaf and Karbala. According to Sistani he wants to “‘allow the police and tribal forces to perform their role in preserving security and order.’” I think this is a good idea. I don’t think the US should commit to a full-scale withdrawal, but they should say that they will withdraw to the perimeters of both cities for 72 hours. If the situation improves, they will stay out; if it worsens, they will enter. They will gaurd the outskirts of the city and prevent people from entering who are not authorized…