I almost never suggest reading the NY Times, but this article on Al Nusra Front is well worth the time.
BAGHDAD (NYT) — The lone Syrian rebel group with an explicit stamp of approval from Al Qaeda has become one of the uprising’s most effective fighting forces, posing a stark challenge to the United States and other countries that want to support the rebels but not Islamic extremists.
Money flows to the group, the Nusra Front, from like-minded donors abroad. Its fighters, a small minority of the rebels, have the boldness and skill to storm fortified positions and lead other battalions to capture military bases and oil fields. As their successes mount, they gather more weapons and attract more fighters.
The group is a direct offshoot of Al Qaeda in Iraq, Iraqi officials and former Iraqi insurgents say, which has contributed veteran fighters and weapons.
“This is just a simple way of returning the favor to our Syrian brothers that fought with us on the lands of Iraq,” said a veteran of Al Qaeda in Iraq, who said he helped lead the Nusra Front’s efforts in Syria.
The Nusra Front’s ally, Al Qaeda in Iraq, is the Sunni insurgent group that killed numerous American troops in Iraq and sowed widespread sectarian strife with suicide bombings against Shiites and other religious and ideological opponents. The Iraqi group played an active role in founding the Nusra Front and provides it with money, expertise and fighters, said Maj. Faisal al-Issawi, an Iraqi security official who tracks jihadi activities in Iraq’s Anbar Province.
But blacklisting the Nusra Front could backfire. It would pit the United States against some of the best fighters in the insurgency that it aims to support. While some Syrian rebels fear the group’s growing power, others work closely with it and admire it — or, at least, its military achievements — and are loath to end their cooperation.
On Friday, demonstrators in several Syrian cities raised banners with slogans like, “No to American intervention, for we are all Jebhat al-Nusra,” referring to the group’s full name, Ansar al-Jebhat al-Nusra li-Ahl al-Sham, or Supporters of the Front for Victory of the People of Syria. One rebel battalion, the Ahrar, or Free Men, asked on its Facebook page why the United States did not blacklist Mr. Assad’s “terrorist” militias.
Another jihadist faction, the Sahaba Army in the Levant, even congratulated the group on the “great honor” of being deemed terrorists by the United States.