The UN Security Council has blacklisted Syria's al Nusra Front as an alias of al-Qaeda in Iraq, a move that will subject the group to sanctions including an arms embargo, travel ban and assets freeze, diplomats said.
The US mission to the United Nations said none of the 15 council members objected to adding al-Nusra as an alias of al-Qaeda in Iraq on Thursday.
Al Nusra, one of the most effective forces fighting President Bashar al-Assad, last month pledged allegiance to al-Qaeda
leader Ayman al-Zawahri.
The US State Department designated al Nusra as a terrorist organisation in December 2012.
Experts have long said al Nusra is receiving support from al-Qaeda-linked fighters in neighbouring Iraq.
The group claimed responsibility for deadly bombings in Damascus and Aleppo, and its fighters have joined other Syrian rebel brigades.