Wesley K. Clark, a former NATO commander and 2004 Democratic presidential candidate, will join UCLA this fall as a senior fellow, university officials plan to announce today. Clark, who is expected to arrive on campus about Oct. 1, will teach occasional seminars, publish policy papers and organize and hold an annual conference on national security, officials said. He will be affiliated with the university's Ronald W. Burkle Center for International Relations. The retired Army general's wide-ranging military, political and teaching background will serve UCLA and its students well, said Patricia O'Brien, executive dean of the university's College of Letters and...