There are as yet no details as to what's on offer, but we can assume there are both carrot and stick elements, and it's a safe bet that there won't be any late-night deliveries into Tehran of pallets loaded with American currency. //

"They are at the threshold of a nuclear weapon. If they decided to do so, they could do so very quickly. If they stockpile enough of that 60 percent enriched, they could very quickly turn it into 90 and weaponize it. That's the danger we face right now. That's the urgency here," he said.

Here's the thing, and I'm going to tell you: "Weaponizing" a nuclear device is generally used to mean putting it in an air-droppable bomb or making it fit on a missile. Iran doesn't have to do that, and Secretary Rubio, the president and the Pentagon certainly know this. All they have to do is assemble a device that goes "boom" when torched off, load it into an old tramp freighter with a skeleton suicide crew - these kinds of useful idiots are common enough in that part of the world - sail it into a darkened harbor some night and set it off. The target might be Haifa or Tel Aviv, or it might be New York. //

Whatever deal is struck, there is one thing we can rely on utterly, as long as Iran's current theocracy is in place: Whatever they agree to, they will lie about it. If they offer to stop enriching uranium, they will just try to move their enrichment facilities out of sight. If they agree to stop trying to produce a bomb, they will keep trying, but their efforts will be moved to some cave in the Alborz Mountains. Whatever they agree to, they will harbor no notions of actually keeping the agreement.

That's what they have done since 1979. That's what they always will do, as long as the mullahs are running Iran.