Heavy fighting between Syrian rebels and regime forces in northern Aleppo.
Video obtained by Reuters shows the Free Syrian Army firing machine guns and heavy artillery on regime forces.
State television announced earlier this month that the Syrian army had advanced into areas dominated by rebel fighters since the start of the civil war.
The area is a key link between the countryside and the city itself, and is an important supply route.
As the U.S. bombs Islamic State targets elsewhere in Syria, regime forces are cracking down on rebel groups in western and northern Syria, in a war that has already claimed the lives on nearly 200,000 people.
