Punt
Since it is apparent that the Security Council can’t do anything about Syria, because Russia and China will veto anything that seems negative about the Assad government; and Britain has already decided they won’t go to the party, Zero is going to pass the problem to Congress.
That provides him with a way out, as Congress has done next to nothing so far, so they aren’t likely to do anything about this. If the House decides to even bring a bill up for a vote, you just know that it will be to de-fund Obamacare, with an amendment to blow up Syria [or not] as that is the only issue that can currently pass the House.