John Kerry actually said...

If the United States of America does not hold him accountable on this with our allies and friends, it is a guarantee Assad will do it again-...

Our goal is a peaceful political transition that results in Asad's departure and the establishment of a representative and legitimate govern...

The indiscriminate and large-scale use of chemical weapons by the regime on August 21 violates clearly established international norms again...

Here we have weapons of mass destruction that we not only know do exist, but they have been used.