Everyone ought to have advisers. Especially politicians. But how many is too many? When do you reach the point when it becomes apparent you have no real foreign policy and are casting about for help in developing one? Call me silly, but probably when it becomes news that your foreign policy advisory corps consists of 300:One recent Q. & A. asked, for example, whether Mr. Obama supported the decision by Iraq’s prime minister, Nuri Kamal al-Maliki, to include a timetable for American troop...