Hundreds of thousands of civilians in rebel-held areas of Aleppo risk starvation, the head of Syria's main opposition coalition said Tuesday, accusing Damascus of trying to besiege the city into submission.
Aleppo, once Syria's economic powerhouse, has been ravaged and divided in two by the conflict that began in March 2011 and has killed more than 280,000 people.
Anas al-Abdeh, head of the Istanbul-based opposition National Coalition, complained that the rebels' backers in the West were letting them down and allies of President Bashar Assad were showing greater commitment.
This lack of "political will" is endangering the shaky peace process based around stop-start talks in Geneva to create a peaceful transition after over five years of civil war, he told AFP in an interview.