There's a non- Jewish-vs-Muslim argument: no country that does not today have nukes should be allowed to develop them. Hold the line. It may not be "fair", but it's safer for the world.

The history is that France gave the Israelis the Dimona Reactor originally as payback for helping the French and British with the Suez Canal nationalized by Egypt. The next French PM said he was giving Israel the technology to prevent another Holocaust.

Although the Arab nations have tried repeatedly to destroy Israel they are not afraid of Israel using the bomb against them. Nor can they conquer Israel because Israel has the bomb. Hence it provides an excuse to never start another war with Israel.

The Saudis and other Sunni Arab countries are terrified of a nuclear Shia Iran and would build their own bomb if Iran had one. As one might imagine, the Saudis are very supportive of Israel's efforts against Iran.

"Some people might say Iran has theocratic and undemocratic elements. "

So does nuclear Pakistan.

Nobody was interested in seeing Pakistan get nukes except for Pakistan and a select few other regimes.

If it were somehow easily possible to strip Pakistan of their nukes, it would be done. Once a country breaks through the nuclear line, the options for dealing with them rapidly dwindle, as we're seeing with North Korea.

Once Iran has nukes, Saudi Arabia is guaranteed to pursue their own. Then suddenly the revolutions that are so common to the middle east become globally threatening to billions of people. Just picture a powerful terrorist group - whether ISIS, Hezbollah, Hamas, etc - with suitcase nukes, it's the classic dread. Nobody else has used nukes in 70 years, for good reason. That will not remain the situation if those types of groups acquire them, they're designed to self immolate. Any of those terrorist organizations would sacrifice their entire organizations, without a second thought, to detonate such a weapon in a major Israeli city. Israel by contrast, has had nukes for decades and could destroy any given nearby country at will, and has chosen to never use them. There is zero chance Israel's enemies will behave similarly: they openly, frequently call for the genocide of Israel.

I don't think Iran is the threat they're made out to be. My husband's family is Sunni Muslim and deeply religious. Despite that, they all see Saudis and gulf Arabs in general as the most intolerant and hypocritical group, even though in theory they should support Sunnis over Shias. My father in law told us about Saudis funding these Madrassas in Pakistan, India, and Bangladesh where they preach hatred of the US and Israel. All of this is anecdotal evidence, but still surprising.

You have to differentiate the Sunni and the Wahhabi/Salafi (which Wahhabis may call themselves Sunni.).

To know who are exactly are they: You may need reopen the history books for 19th century history about Muhammad bin Abd Wahhab, how his father and brother opposed him, what Ottoman's Muhammad Ali Pasha tried to do, etc. connection of the said events with Arab Revolt, T.E. Lawrence, the Saud family, Palestine, Fall of Caliphate 1924, ...Things pretty much went out of hand in Muslim world

From theological perspective (aqeedah) and approach in studying the religion, you can see how much Sunni and Salafi differs.

Probably the only reason Sunni today have diplomatic relations with Saudi Arabia because they control Makkah and Madinah.