What are his options?
Congress would be loathe to disappoint their Big Business buds who were chomping at the bit to reopen commerce with the oil-rich Ayatollahs...that was the driving force behind the treaty in the first place, IMO. Nor will any of our “allies” be willing to re-establish trade sanctions.
Whatever solution he comes up with will have to happen despite the treaty.
Boeing already has a huge order from Iran for bombers airliners.