About one month after the killing of bin Laden, 60-year-old Egypian Ayman al-Zawahri has officially succeeded bin Laden as head of al Qaeda.
CBS News national security analyst, however, says that "Zawahri is not necessarily well-liked, not charismatic. Bin Laden was the founder, the glue of this movement.
And the fact that you haven´t seen a new leader emerge really does suggest that there are internal fissures and friction within the al Qaeda leadership."