BEIRUT, Lebanon (AP) – Maronite Cardinal Nasrallah Sfeir, a strong critic of Syria’s control in Lebanon who left Monday for a meeting with President Bush has emerged as a key opposition figure whose influence cuts across sectarian lines in this religiously diverse nation. The soft-spoken 84-year-old patriarch, head of the Maronite Catholic Church, began criticizing Syrian interference in Lebanese affairs when few dared challenge the authority of the pro-Syria government and its Syrian backers. His first major salvo came in September, months before Lebanon was thrust into the spotlight with the Feb. 14 assassination of former Premier Rafik Hariri, a killing that has triggered mass street demonstrations demanding that Syria get out of Lebanon.