They have made it clear they do not want weapons. You NEED purified and enriched uranium (to a point) for fuel grade stuff, and there has not been the slightest shred of evidence that they ate going further than that AND no evidence whatsoever of them doing all the other shit you need for a nuclear weapon. You need a lot more than enriched uranium to make a bomb or missile warhead, even if they were going that far.
The states purpose of this is that after 1979 Israel wanted Iran to be a failed stated like they did to Iraq and Syria.