Afghan supremacy is brief.

Tahmasp Quli, a chief of the Afshar tribe, soon expels the Afghans in the name of a surviving member of the Safavi family.

He then assumes power in 1736 in his own name as Nader Shah.

He goes on to drive the Ottomans from Georgia and Armenia and the Russians from the Iranian coast of the Caspian Sea and restores Iranian sover eignty over Afghanistan.

He also takes his army on several campaigns into India, sacking Delhi in 1739 and bringing back fabulous treasures.

Nader Shah achieves political unity but his military campaigns and extortionate taxation prove a terrible drain on a country already ravaged and depopulated by war and disorder, and in 1747 he is murdered by chiefs of his own Afshar tribe.

A period of anarchy marked by a struggle for supremacy among Afshar, Qajar, Afghan, and Zand tribal chieftains folows Nader Shah's death.

The Middle East: 1732–1743 CE

The Rise of Wahhabism and Al Saud

This era witnesses the foundational developments of Wahhabism, profoundly shaping future Arabian politics. Muhammad ibn Abd al Wahhab returns from scholarly travels across the Middle East to Najd, advocating a reformist Islamic doctrine aimed at purifying the faith from practices he perceives as idolatrous, particularly those prevalent among the Shia and local tribal traditions. Initially settling in Huraymila and then in Uyaynah, Muhammad ibn Abd al Wahhab gains initial support from local leaders but faces resistance due to his anti-Shia stance, especially from influential Shia centers like Al Hufuf. Forced to leave Uyaynah due to local pressures, he eventually settles in Ad Diriyah, establishing a crucial alliance with local ruler Muhammad ibn Saud, thereby laying the foundation for the future Saudi state.

Muhammad ibn Abd al Wahhab’s teachings, influenced by strict Hanbali principles and earlier reformist scholars such as Ibn Taymiyah, denounce popular Islamic practices like shrine visitation and the veneration of natural objects, branding them polytheistic. His followers identify themselves as Muwahhidun (Unitarians), although opponents label them derogatorily as Wahhabis. This ideological alliance between Abd al Wahhab and Muhammad ibn Saud significantly reshapes the religious and political landscape of the Arabian Peninsula.

Omani Instability and Persian Intervention

In Oman, internal strife continues to undermine Yarubid authority. Saif bin Sultan II, facing significant opposition from his cousin and rival Bal'arab bin Himyar, Imam of the Omani interior, seeks external aid to consolidate power. In 1737, Persian forces under Nader Shah, invited by Saif, decisively defeat Bal'arab bin Himyar in Az Zahirah, briefly restoring Saif bin Sultan II's rule. However, Saif's indulgent lifestyle and poor governance quickly alienate tribal leaders once again.

In 1742, Sultan bin Murshid, another Yaruba family member, emerges as a political figure, leading a rebellion that forces Saif to request further Persian aid. The Persians exploit this instability, capturing strategic forts around Muscat and Sohar. Saif bin Sultan II, betrayed by his Persian allies, dies in 1743, and Sultan bin Murshid is mortally wounded under the walls of Sohar. Bal'arab bin Himyar once again emerges as Imam amidst continuing factional conflict.

Persian Ascendancy under Nader Shah

This period marks significant military and political expansion by Nader Shah of Persia, profoundly reshaping regional dynamics. In 1736, Nader Shah formally ascends to the throne of Persia, initiating a series of aggressive campaigns aimed at restoring Persian dominance across its historical territories. In 1738, Persian forces recapture the vital city of Baghdad, briefly restoring Persian rule over the region and dramatically altering the power balance between Persia and the Ottoman Empire. However, intense conflict and resistance eventually force a Persian withdrawal, stabilizing Ottoman control once again by 1743.

Nader Shah's expansionist ambitions are not confined to Iraq alone. His strategic engagements in the Persian Gulf and Oman reflect broader geopolitical goals of securing trade routes and asserting Persian influence. His incursions significantly impact Omani internal politics and further weaken Ottoman authority throughout the Middle East.

Ottoman Administration and Tribal Power Dynamics

The period sees continued decentralization within Ottoman territories, notably evident in the rising autonomy of tribal groups in Iraq and the Arabian Peninsula. Ottoman central authority in these regions weakens considerably, creating an environment in which tribal confederations and local dynasties, such as the Muntafiq and Bani Lam in Iraq and the Kurdish Baban Dynasty in the north, wield significant power. Tribal authority dominates, exacerbated by the influx of Bedouin tribes like the Shammar and 'Anazzah. This tribal fragmentation continues to challenge Ottoman control and contributes to the overall weakening of centralized governance.

Legacy of the Era

Between 1732 and 1743, critical ideological foundations of the future Saudi state are established through the Wahhabi-Saudi alliance. Simultaneously, Oman experiences prolonged internal conflict and Persian intervention, marking the decline of Yarubid rule. Nader Shah’s brief occupation of Baghdad underscores the shifting balance of power between Persia and the Ottoman Empire. Meanwhile, tribal autonomy increases across Ottoman territories, setting the stage for a fragmented political landscape that will characterize the region in subsequent decades.

Attempts to ratify the treaty ending the Ottoman-Afsharid War are impeded by Persia's insistence that a small Shiite sect, the Ja'fari, be declared orthodox, and by Ottoman haughtiness in torturing the ambassadors of Nadir Shah.

Nader Shah in 1743 declares war on the Turks and, after demanding the surrender of Baghdad, begins a long march to Constantinople.

However, when he learns that the Ottoman ulema (Muslim legal council) has made respectable a holy war against Persia, ...

...he turns east after having captured Kirkuk, ...

..seizing Arbil and ...

...besieging Mosul as a threat to Baghdad.

Iranian ruler Nader Shah had started another war against the Ottoman Empire in 1743.

Attempting a diplomatic ploy, Nader had nade a truce with the Ottomans as a ruse to allow him to subdue revolts throughout Persia in 1743 and 1744 over high war taxes.

He changes the Iranian coinage system, minting silver coins, called Naderi, that are equal to the Mughal rupee, and discontinues the policy of paying soldiers based on land tenure.

Like the late Safavids, he has resettled tribes, transforming the Shahsevan, a nomadic sub-ethnic group of Azerbaijani people whose name literally means "adherents of the Shah", into a tribal confederacy that defends Iran against the neighboring Ottomans and Russians.

In addition, he has increased the number of soldiers under his command and reduced the number of soldiers under tribal and provincial control.

Nader Shah's reforms may strengthen the country, but they do little to improve Iran's suffering economy.

Persian attacks on the Ottomans resume in early 1744 as Nader Shah marches west from Hamadan, ...

...besieging Kars on July 29 and ...

...dashing back to Dagestan to quell a revolt.