// (Reuters) - Secretary of State John Kerry's public assertions that moderate Syrian opposition groups are growing in influence appear to be at odds with estimates by U.S. and European intelligence sources and nongovernmental experts, who say Islamic extremists remain by far the fiercest and best-organized rebel elements.
While the radical Islamists among the rebels may not be numerically superior to more moderate fighters, they say, Islamist groups like the al Qaeda-aligned Nusra Front are better organized, armed and trained.
As recently as late July, at a security conference in Aspen, Colorado, the deputy director of the Pentagon's Defense Intelligence Agency, David Shedd, estimated that there were at least 1,200 different Syrian rebel groups and that Islamic extremists, notably the Nusra Front, were well-placed to expand their influence. //
http://www.reuters.com/article/2013/09/05/us-syria-crisis-usa-rebels-idUSBRE98405L20130905