Ayman al-Zawahiri appointed as al-Qaeda leader
The long-serving second-in-command of al-Qaeda, Ayman al-Zawahiri, has been appointed its head following the death of Osama Bin Laden, the militant organisation said in a statement.
Al-Qaeda warned it would continue to fight a holy war against the US and Israel under al-Zawahiri's direction.
America's top military officer has said al-Zawahiri would be hunted down and killed, just like his predecessor.
BBC security correspondent, Frank Gardner, reports.
16 Jun 2011