Why does killing with poison gas rate more Obama rhetoric than killing with anything else. Assad in Syria has been killing his opposition in vast numbers and the US does nothing, says little, and doesn't get excited. Obama declared that killing civilians with poison gas was worse than killing them in ordinary ways. I don't see that, killing is killing, doesn't matter what weapons the killing is done with.
Anyhow, Obama now finds that he has to do something or be branded as a paper tiger.