I’m confused too. You can’t make a “deal” with Iran if they don’t want to make one. Or if their deals turn out to be worthless.
Of course, you can outright accept their terms. But that is more like surrender than a “deal”.
It’s not even clear who you’re making a deal with. Anyway, most deals made in the fog of war end up being broken.
Finish it off?? What will he do, nuke the entire country and kill 90 million people? Unthinkable.
The Muslims have been at it for 1,400 years. I think the best we can strategize for is containment. We did achieve something with the destruction of of the mountain bomb making fortress, at least slowing the nuclear program down for years.