An image taken from an Internet posting by al Qaeda's media ...

16th Nov 2006, 16:00 GMT

(Reuters) - An image taken from an Internet posting by al Qaeda's media arm, al Sahab on September 11, 2006, shows Osama bin Laden speaking in an unknown location. Bin Laden may be the leading symbol of global Islamist militancy but the al Qaeda leader wields less influence over Islamist ideology than more obscure religious thinkers, according to a new study issued on Wednesday. (Handout/Reuters)