Nice revision...
For quite some time, the meme was that Iran had no intention at all of building nuclear weapons, so what's the point of trying to stop them?
Now, we hear that there's no way to prevent them from building nuclear weapons, so what's the point of trying to stop them?
I must have missed the switchover.
I suspect the next phase will be that Iran having nuclear missiles is a GOOD thing, enhancing peace in the Middle East by deterring the evil Israelis who would otherwise use their nukes to attack everyone.