Den gruppen i Syria som USA nylig advarte mot pga Al Qaida-tilknyting, sto i spissen for erobringen av en syrisk militærbase nylig.
Fighters from jihadi groups, including Jabhat al-Nusra, were among those doing battle in the rebel ranks as they took control of Sheik Suleiman base, near the northern city of Aleppo, according to the Observatory and other activists.
The presence of the jihadi groups has raised concerns in the U.S. and other nations that are supporting the opposition in Syria but do not want to see extremists gain power in the region. The U.S. this week blacklisted al-Nusra as a foreign terrorist organization and said the group was part of al-Qaida in Iraq.
But al-Nusra fighters appear to be among the most effective fighting forces on the rebel side, spearheading many of the recent gains.
The U.S. terror designation freezes any assets members of al-Nusra may have in U.S. jurisdictions and bars Americans from providing the group with material support. It’s largely symbolic because the group is not thought to have holdings or support in the United States, but officials hope the penalties will encourage others to take similar action and discourage Syrians from joining.
The administration took further action Tuesday against extremists on both sides, with the Treasury Department setting separate sanctions against two senior al-Nusra leaders and two militant groups operating under the control of Syrian President Bashar Assad’s government. Two commanders of the pro-regime shabiha force also were targeted.
«We will target the pro-Assad militias just as we will the terrorists who falsely cloak themselves in the flag of the legitimate opposition,» said David S. Cohen, the department’s sanctions chief.
The battle for Sheik Suleiman military base ended when the rebels took over the site’s main compound and warehouses that housed a military research center. They had first breached the base perimeter on Sunday afternoon, after weeks of fighting with soldiers loyal to Assad, according to the Observatory, which relies on a network of activists inside Syria. The Observatory said 35 soldiers were killed but did not give figures on rebel casualties.