Saudi Arabia and the Gulf are the topics, here is the audio, video, and transcript.  Here is the episode summary:

David Commins, author of the new book Saudi Arabia: A Modern History, brings decades of scholarship and firsthand experience to explain the kingdom’s unlikely rise. Tyler and David discuss why Wahhabism was essential for Saudi state-building, the treatment of Shiites in the Eastern Province and whether discrimination has truly ended, why the Saudi state emerged from its poorer and least cosmopolitan regions, the lasting significance of the 1979 Grand Mosque seizure by millenarian extremists, what’s kept Gulf states stable, the differing motivations behind Saudi sports investments, the disappointing performance of King Abdullah University of Science and Technology despite its $10 billion endowment, the main barrier to improving its k-12 education, how Yemen became the region’s outlier of instability and whether Saudi Arabia learned from its mistakes there, the Houthis’ unclear strategic goals, the prospects for the kingdom’s post-oil future, the topic of David’s next book, and more.

And an excerpt:

COWEN: Now, as you know, the senior religious establishment is largely Nejd, right? Why does that matter? What’s the historical significance of that?

COMMINS: Right. Nejd is the region of central Arabia. Riyadh is currently the capital. The first Saudi empire had a capital nearby, called Diriyah. Nejd is really the territory that gave birth to the Wahhabi movement, it’s the homeland of the Saud dynasty, and it is the region of Arabia that was most thoroughly purged of the older Sunni tradition that had persisted in Nejd for centuries.

Consequently, by the time that the Saudi government developed bureaucratic agencies in the 1950s and ’60s, the religious institution was going to recruit from that region of Arabia primarily. Now, it certainly attracted loyalists from other parts of Arabia, but the Wahhabi mission, as I call it — their calling to what they considered true belief — began in Nejd and was very strongly identified with the towns of Nejd ever since the late 1700s.

COWEN: Would I be correct in inferring that some of the least cosmopolitan parts of Saudi Arabia built the Saudi state?

COMMINS: Yes, that is correct. That is correct. If you think of the 1700s and 1800s, the Red Sea and Persian Gulf coast of Arabia were the most cosmopolitan parts of Arabia.

COWEN: They’re richer, too, right? Jeddah is a much more advanced city than Riyadh at the time.

COMMINS: Somewhat more advanced. Yes, it is more advanced, it is more cosmopolitan than Nejd. There is the regional identity in Hejaz, that is the Red Sea coast where the holy cities and Jeddah are located. The townspeople there tended to look upon Nejd as a less advanced part of Arabia. But again, that’s a very recent historical development.

COWEN: How is it that the coastal regions just dropped the ball? You could imagine some alternate history where they become the center of Saudi power and religious thought, but they’re not.

COMMINS: Right. If you take Jeddah, Mecca, and Medina — that region of Arabia, known as Hejaz, had always been under the rule of other Muslim empires. They were under the rule of other Muslim powers because of the religious value of possessing, if you will, the holy cities, Mecca and Medina. From the time of the first Muslim dynasty that was based in Damascus in the seventh and early eighth centuries, all the way until the Ottoman Empire, Muslim dynasties outside Arabia coveted control of that region. They were just more powerful than local resources could generate.

Hejaz was always, if you were, to dependency on outside Muslim powers. If you look at the east coast of Arabia — what’s now the Eastern Province of Saudi Arabia and the Persian Gulf — it was richer than central Arabia. It’s the largest oasis in Arabia. It is in proximity to pearling banks, which were an important source for income for residents there. It was part of the Indian Ocean trade between Iraq and India. The population there was always — well, always — for the last thousand years has been dominated by Bedouin tribesmen.

There was a brief Ismaili Shia republic, you might say, in that part of Arabia in medieval times. It just didn’t have, it seems, the cohesion to conquer other parts of Arabia. That’s what makes the Saudi story really remarkable, is that they were able to muster and sustain the cohesion to carry out a conquest like that over the course of 50 years.

COWEN: Physically, how did they manage that? Water is a problem, a lot of transport is by camel, there’s no real rail system, right?

Recommended, full of historical information about a generally neglected region, neglected from the point of view of history at least rather than current affairs.