Um... yes they did. Assad has been attacking his own people with all manner of illegal weapons for years. Where the fuck have you been for almost the past decade?
not caring is where i've been tbh
besides that, russia is the ones who were supposed to be preventing this kind of things from happening. they failed. in 2013 syra was ordered to surrender any and all chemical weapons to russia.
moreover, the UN pretty much ignored the fact that they used sarin nerve gas, which, again, is illegal to use. like everywhere.
So instead of doing the, I don;t know, SANE thing, like looking for a diplomatic solution before going to fullscale war, we just go from 0 to Iraq War 2.0?