At a glance: Al-Qaida's most wanted - Article Photos 1/1

FILE - In this file video frame grab image provided by IntelCenter, a private terrorism analysis company, and taken from a video released Friday Nov. 28, 2008 by the media arm of al-Qaida, As-Sahab, Ayman al-Zawahiri speaks in a video entitled "al-Azhar" or "The Lion's Den". Al-Zawahiri, Osama bin Laden's doctor and spiritual adviser, is still at large. (AP Photo/IntelCenter, file) MANDATORY CREDIT