By Tim Lister and Paul Cruickshank
Former CIA Director David Petraeus is expected to tell House and Senate committees Friday that soon after the attack on the U.S. Consulate in Benghazi, Libya, it suspected Ansar al Sharia was responsible. But just what is Ansar al Sharia, and why wasn't it identified as a prime suspect two months ago?
There is no easy answer.
Ansar al Sharia is more a label than an organization, one that's been adopted by conservative Salafist groups across the Arab world. The name means, simply, "Partisans of Islamic Law."FULL STORY