No nuclear armed country has ever become a smoking desolate parking lot or has ever been attacked by the US
Has the U.S., Europe, and Israel made it very clear that a nuclear-armed terrorist-state Iran is totally unacceptable? Have the Mullahs failed to understand the lesson? Does Iran need another lesson before they foolishly pursue further enriching uranium. This time is actually a good opportunity for Iran to take up Trump on removing many sanctions, unfreezing cash worldwide, and helping the country to pursue a peaceful nuclear power program. However it does not sound like the Mullahs and their supporters in Iran want to do this as they loudly shout, "Death to America", "Death to Israel", and "Death to the West". I think the Mullah's next significant problem is going to be an uprising against the oppression of the country's corrupt terrorism-supporting leadership.
Oh... if they have nukes it will merely ensure that a good portion of the Middle East is a smoking wasteland.
The US and its allies said the same about N Korea,until they had nukes.No country would dare attack them now.
There was an article a while ago pointing out the differences between Iran and North Korea. Some of the key points is that Iran actively exports terrorism across the world and uses proxies to wage war across the region including against neighbors such as Saudi Arabia. A second point relates to the strategic importance of the location of Iran compared to North Korea. The third is the lack of restraint of the Mullahs leading Iran -- they are more focused on creating destruction than providing proper government for the people of Iran. They will happily sacrifice every person in Iran if they can nuke Israel and Saudi Arabia -- in the same way that Hamas is willing to sacrifice the lives of every single Palestinian in Gaza if it enables them to kill more Israelis.
That is about the first thing Iran under the mullahs will do when they have acquired ten bombs or so. Their hatred overwhelms their reason & rationality.