The Fall of Baghdad, 1258. Baghdad had for centuries been the capital of the Caliphate. The Abbasids had in 751 overthrown the Umayyad, and had moved the Caliph's seat from Damascus to Baghdad. At the city's peak, it was populated by approximately one million people and was defended by an army of 60,000 soldiers. By the middle of the 13th century, however, the power of the Abbasids had declined but the city still retained much symbolic significance and it remained a rich and cultured city. The Caliphs of the 12th and 13th centuries had begun to ally with the expanding Mongol Empire in the east, and Caliph an-Nasir li-dini'llah, who reigned from 1180-1225, may have attempted to ally with Genghis Khan when Muhammad II of Khwarezm threatened to attack the Abbasids. According to the “Secret History of the Mongols”, Genghis and his successor, Ögedei Khan, ordered their general Chormaqan to attack Baghdad. In 1236, Chormaqan led a division of the Mongol army to Irbil, which remained under Abbasid rule. Further raids on Irbil and other regions of the caliphate became nearly annual occurrences. Some raids were alleged to have reached Baghdad itself, but these Mongol incursions were not always successful, with Abbasid forces defeating the invaders in 1238 and 1245. Despite their successes, the Abbasids hoped to come to terms with the Mongols and by 1241 they had adopted the practice of sending annual tribute to the court of the khagan. Envoys from the Caliph were present at the coronation of Guyuk Khan as khagan in 1246 and that of Mongke Khan in 1251. In 1257, Möngke resolved to establish firm authority over Mesopotamia, Syria, and Iran. The khagan gave his brother, Hulagu, authority over a subordinate khanate and army, the Ilkhanate, and instructions to compel the submission of various Muslim states, including the caliphate. Möngke ordered Hulagu to destroy Baghdad if the Caliph refused his demands of personal submission and the payment of a tribute. In preparation for his invasion, Hulagu raised a large expeditionary force, what may have been the most numerous Mongol army to have existed and, by one estimate, 150,000 strong. The force was also supplemented by Christian forces, including the King of Armenia and his army, a Frankish contingent from the Principality of Antioch, and a Georgian force, seeking revenge on the Muslim for the sacking of their capital, Tiflis. About 1,000 Chinese artillery experts accompanied the army, as did Persian and Turkic auxiliaries, according to Ata al-Mulk Juvayni, a contempary Persian observer. Hulagu sent word to Al-Musta'sim, demanding his acquiescence to the terms imposed by Möngke. Al-Musta'sim refused, in large part due to the influence of his advisor and grand vizier, Ibn al-Alkami. Historians have ascribed various motives to al-Alkami's opposition to submission, including treachery and incompetence, and it appears that he lied to the Caliph about the severity of the invasion, assuring Al-Musta'sim that, if the capital of the caliphate was endangered by a Mongol army, the Islamic world would rush to its aid. On 29 January 1258, the Mongol army began its siege of Baghdad, constructing a palisade and a ditch around the city. Employing siege engines and catapults, the Mongols attempted to breach the city's walls, and, by February 5, had seized a significant portion of the defenses. Realizing that his forces had little chance of retaking the walls, Al-Musta'sim attempted to open negotiations with Hulagu, who rebuffed the Caliph. Five days later, on February 10, the city surrendered, but the Mongols did not enter the city until the 13th, beginning a week of massacre and destruction. The Mongols sacked Baghdad, committing numerous atrocities and massacred many residents of the city, which was left greatly depopulated. The caliph was captured and forced to watch as his citizens were murdered and his treasury plundered. According to most accounts, the caliph was killed by trampling. The Mongols rolled the caliph up in a rug, and rode their horses over him. All but one of his sons were killed, who was sent to Mongolia. Martin Sicker writes that close to 90,000 people may have died. Other estimates go much higher. Wassaf claims the loss of life was several hundred thousand. Ian Frazier of The New Yorker says estimates of the death toll have ranged from 200,000 to a million. The Mongols looted and then destroyed mosques, palaces, libraries, and hospitals. Grand buildings that had been the work of generations were burned to the ground. The Grand Library of Baghdad, containing countless precious historical documents and books on subjects ranging from medicine to astronomy, was destroyed. Survivors said that the waters of the Tigris ran black with ink from the enormous quantities of books flung into the river and red from the blood of the scientists and philosophers killed. Hulagu had to move his camp upwind of the city, due to the stench of decay from the ruined city. The siege is considered to mark the end of the Islamic Golden Age, during which the caliphates had extended their rule from the Iberian Peninsula to Sindh, and which was also marked by many cultural achievements. Baghdad, one of the most brilliant intellectual centers in the world was a depopulated, ruined city for several centuries and only gradually recovered some of its former glory. The Mongol destruction of Baghdad was a psychological blow from which Islam never recovered. Already Islam was turning inward, becoming more suspicious of conflicts between faith and reason and more conservative. With the sack of Baghdad, the intellectual flowering of Islam was snuffed out.













