Why are we so quick to assume that Assad did it? He is winning. Why would he gas his own people?
There are plenty of terrorists who are happy to kill by any means, especially if someone else gets the blame, like their enemy, Assad.
Something does not add up here.
As Tokyo Japan proved, terrorists can make or obtain Sarin gas. Chlorine gas is easy to make and deadly. Many times more easy than other deadly weapons. A big question is why do people think only Assad’s government could make such a chemical agent? Any of the countries or small terrorists organizations could at least make the gas.