I claim no expertise on Iran, but much like Cuba they just seemed like people who pissed off our military-industrial-intelligence state a few years ago for failing to be obedient so they become The Next Hitler for several decades. All the nuclear stuff and imperial ambition stuff just seems entirely made up to me, but what do I know. I don't know why people wet themselves over their fear of nuclear Iran but nuclear North Korea and nuclear Pakistan (and nuclear everybody Pakistan gave nuke tech too), but that has been the Washington Consensus for a long time.
From that perspective, I don't really care about a deal on their nukes, I just hope there's one less supposed Hitler to our Chamberlain in the world. That stuff gets old. We have the power to destroy anyone a thousand times over, yet fear of little Hitlers everywhere is our constant foreign policy motivation. It's stupid. Just make it stop. We have normalized relations with so many horrible countries, and Iran doesn't seem to be that horrible, really. Again, no expert, so feel free to tell me I'm wrong.