https://en.wikipedia.org/wiki/Khan_al-Assal_chemical_attack - https://en.wikipedia.org/wiki/Khan_al-Assal_chemical_attackYou've never heard of this chemical attack. Why? It has all the hallmarks of the Ghouta chemical attack that happened in August the same year and was blamed on Assad by the western media. Yet it's far, far harder to pin this attack on Assad as it hit a government-held area and even killed at least 16 Syrian government troops. I am 95% certain that the rebels committed this attack and that this at the very least sets a precedent that they have access to and a willingness to use chemical weapons. Therefore it is not a stretch to go from there and make the conclusion that they most likely committed the Ghouta chemical attack and the later one in 2017.