At this morning’s presser taking seven minutes to remind the world that he’s trying hard not to enforce his “red line.”

The big soundbite is his vague pseudo-warning near the end about rethinking the “range of options” available to him, but that’s not the interesting part. The interesting part is him wondering aloud whether Assad’s really responsible for using chemical weapons lately — “we don’t know when they were used, how they were used. We don’t know who used them. We don’t have a chain of custody,” etc. He sounded a lot more skeptical about claims of Assad’s innocence a few weeks ago at that presser in Jerusalem. If isn’t Assad isn’t to blame for the recent gas attacks, then who? Hmmmm: