Syrian government forces are being accused of conducting a chlorine attack on a neighborhood of Aleppo, killing at least one person and injuring more than 70.
The reports could not be independently verified, but they come as rebel leaders met in London to unveil a plan for a political transition that would end the country's five years of civil war.
Here & Now's Robin Young speaks with Hadya Alalawi of the BBC about what is known about the attack and the plan.
Hadya Alalawi, reporter for the BBC in London. She tweets @HadiaAlawi.
This segment aired on September 7, 2016. The audio for this segment is not available.