Support WBURAl-Qaida's Resilience May Mean Its SurvivalPlay04:01Download AudioDina Temple-RastonMay 02, 2011 ShareTerrorism experts say that Ayman al-Zawahiri, currently the No. 2 of al-Qaida, is well-positioned to take the helm of the terrorist group. This picture is from an online video released on Sept. 2, 2006. (AFP/Getty Images)
