1) Let’s assume that Assad really did use chemical weapons for the sake of argument. If he had used incendiaries and burned some children alive in an attempt to fight ISIS, would that really be worse than nerve gas?
2) Do you really want to engage in a policy of nation building in Syria like we’ve done in Iraq and Afghanistan?
3) You don’t think Russia is willing to fight a conflict if provoked, but how willing is the American public to tolerate another war? Trump would lose the good will of most people who voted for him. National security hawks are NOT what got Trump elected.