There were negotiations before it all started and people seem to have missed or forgotten the claim that Iran mentioned having material to create 11 nukes during this. When this first came out all the news reported there was no evidence Iran had that, but now their refined uranium isn't really in question.

Also during this one of their missiles hit a target 4000 kilometers away, much further than they were claiming they had. That's far enough to hit Europe if it had gone in the other direction.

To me it's looking like the stability was an illusion.