If he did the bombing because of this, then it makes sense. Because nobody believes that Assad used chemical weapons. He's already winning and there is no reason or whatsoever for him to do so.
http://www.youtube.com/watch?v=k9PoRUVviiQSometimes you just need to show who the boss is.
If killing of innocent people is just to prove to x1 that America can bumb any countries without the help of China then I think is evil and wickedness from those who were voted to protect humanity. Though Assad has been against his own people but attack him and his regime because of prove of superiority then is evil.