And yes Assad has probably left orders to launch if he was killed, but that play requires his survivors to still be willing to push the buttons after he is dead. Not guaranteed.
There is a big question mark about who used gas on whom. My bet is that what we predicted months ago that zero's thug/terrorists aka freedom fighters are the ones who used the gas not Assads people. Assad would indeed have to be suicidal/brain dead to use gas now after sitting on it for decades.He of all people knows what happens if he uses gas.