War with the Dutch East India Company The Zands and the Dutch often clashed for influence of the
Kharg Island. Some time later, Karim Khan, Ali Mardan Khan and another Bakhtiari chieftain named
Abulfath Khan Bakhtiari reached an agreement to divide the country among themselves and give the throne to the Safavid prince
Ismail III. However, the cooperation ended after Ali Mardan Khan invaded
Isfahan and killed Abulfath Khan. Subsequently, Karim Khan killed Ali Mardan Khan and gained control over all of Iran except Khorasan, which was ruled by
Shahrukh, the grandson of Nader Shah. Nevertheless, Karim Khan did not adopt the title of
Shah for himself, preferring the title, ''Vakil al-ra'āyā'' (Representative of the People). While Karim was ruler, Persia recovered from the devastation of 40 years of war, providing the war ravaged country with a renewed sense of tranquility, security, peace, and prosperity. The years from 1765 to Karim Khan's death in 1779 marked the zenith of Zand rule. During his reign, relations with Britain were restored, and he allowed the
East India Company to have a trading post in southern Iran. He made
Shiraz his capital and ordered the construction of several architectural projects there. Karim Khan later died on 1 March 1779, having been ill for six months, most likely due to
tuberculosis. He was buried three days later in the "Nazar Garden", now known as the
Pars Museum. Following Karim Khan's death, civil war broke out once more, and none of his descendants were able to rule the country as effectively as he had. The last of these descendants,
Lotf Ali Khan, was killed by
Qajar ruler
Agha Mohammad Khan, who became the sole ruler of Iran.
War with the Ottoman Empire (1775–1776) , dated 1773/4 In 1774, the
Mamluk governor of the Ottoman province of Iraq,
Omar Pasha began meddling in the affairs of his vassal principality of
Baban, which since the death of his predecessor
Sulayman Abu Layla Pasha in 1762, had fallen more and more under the influence of the Zand governor of
Ardalan, Khosrow Khan Bozorg. This made Omar Pasha dismiss the Baban ruler Muhammad Pasha, and appoint Abdolla Pasha as its new ruler. This, and Omar Pasha's seizure of the remnants of Iranian pilgrims who had died during the plague that ravaged Iraq in 1773—and his exaction of payment from Iranian pilgrims to visit the holy
Shia places of
Najaf and
Karbala, gave Karim Khan the
casus belli to
declare war against the Ottomans. There were also other reasons for Karim Khan to declare war—
Mashhad, where the holy
Imam Reza shrine was situated, was not under Zand control, which thus meant that free entry to the sanctuaries of Iraq was of more significance to Karim Khan than it had been to the Safavid and Afsharid shahs. The Zand army was discontent, and sought to restore their reputation after
Zaki Khans humiliating blunders on the
Hormuz Island. Most importantly, Basra was a prominent trading port, which had surpassed the competing city of
Bushehr in Fars in 1769, when the
East India Company dropped the city for Basra. The Zand forces under
Ali-Morad Khan Zand and Nazar Ali Khan Zand shortly clashed with the Pasha's forces in Kurdistan, where they kept them at bay, whilst Sadeq Khan, with an army of 30,000, besieged Basra in April 1775. The Arab tribe
al-Muntafiq, which was allied with the governor of Basra, quickly withdrew without any effort to reject Sadeq Khan from passing through the
Shatt al-Arab, whilst the
Banu Ka'b and the Arabs of Bushehr supplied him with boats and supplies. Suleiman Agha, who was the commander of the fort of Basra, resisted Sadeq Khan's forces with resolve, which made the latter establish an encirclement, which would last over a year. Henry Moore, who belonged to the East India company, assaulted some of Sadeq Khan's stockpile boats, tried to block the Shatt al-Arab, and then departed to
Bombay. A few months later, in October, a group of ships from Oman gave supplies and military aid to Basra, which considerably lifted the morale of its forces. However, their combined attack the next day occurred to be wavering—the Omani ships eventually chose to withdraw back to
Muscat during winter, in order to avoid further losses. envoy Vehbi Efendi. Reinforcements from Baghdad arrived shortly afterwards, which was repelled by the Khaza'il, a Shia Arab tribe which was allied with the Zand forces. In the spring of 1776, the narrow encirclement by Sadeq Khan had resulted in the defenders being on the fringe of famine—a considerable portion of the Basra forces had deserted Suleiman Agha, whilst the rumours of a possible uprising, made Suleiman Agha surrender on 16 April 1776. Even though the able Ottoman Sultan
Mustafa III (r. 1757–1774) had died and was succeeded by his incompetent brother
Abdul Hamid I (r. 1774–1789), and the recent Ottoman
defeat to the Russians, the Ottoman response to the Ottoman–Iranian war was unusually slow. In February 1775, before the announcement of the siege of Basra had approached
Constantinople, and while the
Zagros front was temporarily peaceful, the Ottoman ambassador, Vehbi Efendi, was sent to Shiraz. He reached Shiraz around the same time Sadeq Khan besieged Basra, "but was not empowered to negotiate over this new crisis." In 1778, Karim Khan had made a compromise with the Russians for a cooperative offensive into eastern
Anatolia. However, the invasion never took place due to Karim Khan's death on 1 March 1779, after having been ill for six months, most likely due to
tuberculosis. He was buried three days later in the "Nazar Garden", now known as the
Pars Museum. == Succession ==