UNITED NATIONS - Tanzania's Asha-Rose Migiro took the oath of office Monday as U.N. deputy secretary-general, pledging to press U.N. reform and telling critics she has the management expertise to overhaul the world body. Secretary-General Ban Ki-moon introduced Migiro to the media soon after he administered the oath. "I'm quite confident that with her extensive knowledge and experience as a former foreign minister and development minister of Tanzania, she will bring leadership qualities to this organization," Ban said. Ban appointed Migiro to the No. 2 job at the United Nations soon after taking over as U.N. chief on Jan. 1....