Ahead of attack, Hillary Clinton called for strikes against Syrian airfields

She said it could prevent future chemical attacks.

"Assad had an air force and that air force is the cause of most of the civilian deaths as we’ve seen over the years and as we saw again in the last few days," said Clinton. "I really believe we should have and still should take out his airfields and prevent him from being able to use them to bomb innocent people and drop sarin gas on them."

ABC News' Liz Kreutz contributed to this report.