VATICAN CITY — After a season of apparent policy slip-ups, Pope Benedict XVI is shuffling top advisers and bringing in veteran diplomats closely identified with Vatican policy in Iraq and the Middle East. On Monday, Benedict restored an office that specializes in relations with Muslims, a year after he was criticized for disbanding it. He appointed French Cardinal Jean-Louis Tauran, the Vatican's foreign affairs chief from 1990 to 2003, as president of the Pontifical Council for Interreligious Dialogue, raising the office's profile. Tauran was one of the strongest Vatican opponents of U.S. plans to invade Iraq, saying a unilateral military...