I don’t think that anybody seriously believes that Assad or anybody else in the Syrian government really ordered a chemical weapons attack on anybody. To believe that it would require you to find the following sequence logical: first, Assad pretty much wins the war against Daesh which is in full retreat. Then, the US declares that overthrowing Assad is not a priority anymore (up to here this is all factual and true). Then, Assad decides to use weapons he does not have. He decides to bomb a location with no military value, but with lots of kids and cameras. Then, when the Russians demand a full investigation, the Americans strike as fast as they can before this idea gets any support. And now the Americans are probing a possible Russian role in this so-called attack. Frankly, if you believe any of that, you should immediately stop reading and go back to watching TV. For the rest of us, there are three options:
a classical US-executed false flag
a Syrian strike on a location which happened to be storing some kind of gas, possibly chlorine, but most definitely not sarin. This option requires you to believe in coincidences. I don’t. Unless,
the US fed bad intelligence to the Syrians and got them to bomb a location where the US knew that toxic gas was stored