CAIRO Egyptian President Hosni Mubarak swore in Ahmed Maher as foreign minister on Tuesday to replace Amr Moussa, who will become secretary general of the Arab League, the official Middle East News Agency said. It said Maher, a former ambassador to Washington, took his oath of office in a ceremony in the Red Sea resort of Sharm el-Sheikh, Reuters said. Moussa, a charismatic figure who has served as foreign minister since 1991, is due to take over leadership of the 22-nation Arab League at its Cairo headquarters on Wednesday.