No way will Iran accept any agreement that doesn't put a halt to the impending sanctions as well as prohibiting further sanctions. The P5+1 needs to give something in return to get something and merely the threat of their facilities being bombed is not sufficient for the Iranians to give up anything. That is a non-deal and it would be better to save American tax dollars and fly all those people over there for nothing. Put a hold on the oil industry and banking industry sanctions and Iran would be willing to do about anything. If Israel plays nice and doesn't make waves we might just give Pollard back.
U.S. to defend Syrian rebels with airpower, including from Assad (Reuters)