Are you unaware of our involvement in the area? I suggest clicking on the links in my comment. Any decent response would involve deposing both the saudi arabian government and our own, including many high-level state department officials, and charging them with crimes against humanity. Probably a few other dozen states, too.

But international law is a joke these days, so humanity will let the missiles do diplomacy instead.

...

Look, obviously violence is bad. But we have made such a farce of all other ways of negotiating conflict that it's refreshing to see people stand up for themselves without our permission.