" was the attack intentionally ordered by Assad's government or was it work of a rogue Syrian officer?"

That opens the possibility of yet another scenario. If there was "a rogue Syrian officer " responsible that could mean one acting with the intention of provokng external intervention in order to undermine the regime.

The thing is, we just don't know anything except that an awful lot of people have ben horribly killed.

Before any kind of action could possibly be right there would have to be genuine reason to believe that it would make things better. At this time there is nothing even aproaching that.