Fighting raged in Aleppo between rebels and Syrian regime forces on Sunday, a day after the opposition broke a weekslong government siege on its eastern half.

The rebel factions are making a bid to open a main road for food and humanitarian aid to reach some 300,000 civilians who have been besieged in opposition-held areas of Syria’s former commercial capital.

Only a few pickup trucks carrying vegetables have made their way into Aleppo since the rebels’ offensive made its breakthrough on Saturday evening. Airstrikes from regime and Russian warplanes continued to target opposition fighters, local residents and rebels said. […]