I think you have brought up a good point bb. Who cares whether you are using regular munitions, chemical munitions (though in this case they were not used to kill) or bad government policy. The end result is that people are still dead.

There is nothing more 'moral' about killing someone with a gun than killing someone with poison. The end result is that they are still dead. All of this ethical wrangling will not change that fact for the dead person.

Good grief you could classify McDonalds as a chemical weapon if you really wanted to.