John Kerry actually said...

"If the United States, which has the greatest capacity to do that, does not help lead that effort, then shame on us."

"It is a guarantee that if the United States does not act together with other countries, we know what Assad will do."

"It would not be sensible to pass this resolution with a view to degrading his capacity and preventing him from doing it, if he were foolish enough to do it again."

"the President would have the authority, and the right, and, conceivably, the imperative to respond without any other authorization if Assad were to attack again."