Al Qaeda’s top strategist and second-in-command Ayman al-Zawahri is shown in this undated file photo. A U.S. airstrike in Pakistan targeted al Qaeda’s No. 2 al-Zawahiri but it was unclear if he had been killed, CNN quoted U.S. sources as saying on January 13, 2006. Al Qaeda leader Osama Bin Laden and the Egyptian-born Zawahiri have eluded capture since U.S.-led forces toppled Afghanistan’s Taliban government in 2001 after the September 11 attacks. PAKISTAN OUT REUTERS/Hamid Mir/Editor/Ausaf Newspaper for Daily Dawn/Files