The United States and Britain have suspended all non-lethal assistance to northern Syria after rebels seized arms depots of the western-backed Free Syrian Army.
The Islamic Front was formed last month when six groups merged and pledged to overthrow the President Bashir al-Assad and form an Islamic state.
The Front said last week it had seized anti-aircraft and anti-tank weapons from warehouses at the Bab al-Hawa crossing on Syria's northwestern border with Turkey.
The US said the suspension will not impact on humanitarian assistance, which is coordinated by aid agencies.
