This is the third episode of a five part series on the Mongol invasions and the astonishing reversal that followed. It tells the story of the day the unstoppable were finally stopped: the Battle of Ain Jalut, fought on the twenty fifth of Ramadan, the third of September 1260, in the Jezreel Valley of Galilee.

The episode begins with the men who marched out of Egypt, the Mamluks, slave soldiers bought as boys on the same steppe the Mongols came from and raised into the most disciplined heavy cavalry in the Islamic world. We meet Sultan Qutuz, a Khwarazmian prince enslaved as a child, and his brilliant general Baybars, the Qipchaq Turk who had already broken the Seventh Crusade and captured King Louis the Ninth of France. We read Hulagu's chilling ultimatum to Qutuz, with its promise to shatter the mosques and reveal the weakness of his God, and we watch Qutuz answer it by executing the envoys and mounting their heads on the Bab Zuwayla gate of Cairo. Then comes the battle itself, where the Mongols' own signature trick, the feigned retreat, was turned against them by men who had been born to it, and where Qutuz tore off his helmet and charged crying Wa Islamah, O my Islam.

The episode is careful about what the sources can prove. It gives the honest version of Ain Jalut: the armies were roughly matched, not ten to one, and the deepest cause of the Mongol defeat was the death of the Great Khan Mongke, which had stripped away their numbers. Ain Jalut broke the myth of Mongol invincibility, but it did not end the war. And the victory was soaked in regicide within weeks, when Baybars assassinated Qutuz on the road home and took the throne.

The deepest turn, though, happened far to the north. Berke, grandson of Genghis Khan and ruler of the Golden Horde, had become the first Mongol khan to embrace Islam, won over by merchants and Sufis of Bukhara. When he learned that his cousin Hulagu had destroyed Baghdad and killed the khalifa, he allied with the Mamluks and went to war against his own family, crushing Hulagu's army at the frozen Terek River in 1263. The episode is honest that Berke also had hard material motives, pastures, the slave trade, and a wider Mongol civil war, while insisting that the faith was real, central, and new. Mongol against Mongol, because of Islam.

Sources: al-Maqrizi's Kitab al-Suluk, Ibn Abd al-Zahir's biography of Baybars, Ibn Kathir's al-Bidaya wa al-Nihaya, al-Nuwayri's Nihayat al-Arab, and Rashid al-Din's Jami al-Tawarikh, with modern scholarship and accessible Islamic history sources including Saudi Aramco World, Britannica, Lost Islamic History, and the Yaqeen Institute.

Content Warning: This episode describes the Battle of Ain Jalut, the execution of envoys, the killing of commanders, and the assassination of Sultan Qutuz, handled factually and without graphic detail.

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This is the second episode of a five part series on the Mongol invasions and the astonishing reversal that followed. It tells the story of the single most catastrophic day in the political history of the medieval Muslim world: the fall of Baghdad in 1258.

The episode follows Hulagu, a grandson of Genghis Khan, as he leads an enormous army west to finish what his grandfather began. We watch him switch off the feared Assassins of Alamut in a single campaign, then close in on Baghdad, a city that had been the capital of the Abbasid khilafa for nearly five centuries but that had grown weak, divided, and badly led. We look honestly at the khalifa al-Musta'sim and his fatal mixture of pride and paralysis, at the contested accusation that his own vizier betrayed the city, and at the swift and terrible siege that followed. Then comes the sack, the destruction of the libraries, the famous image of the Tigris running black with ink, and the execution of the last khalifa, rolled in a carpet so that no royal blood would touch the earth. The episode treats the violence the way the Muslim chroniclers did, soberly and without sensationalism, and it is careful about what the sources can prove, including the modern argument that Baghdad's intellectual life was not destroyed as completely as legend holds.

From Baghdad the storm rolls on into Syria, taking Aleppo and Damascus under a Christian Mongol general, and the refugees flee toward Egypt with the Mongols at their backs. And then, at the last possible moment, the story turns on an accident no one in the path of the storm could have known about: the death of the Great Khan far away in China, which pulled Hulagu and the bulk of his army back east and left only a fraction behind. For the first time in forty years the Mongols were exposed, and in Egypt a new power, the slave-soldiers known as the Mamluks, decided to march out and meet them.

Sources: Ibn Kathir's al-Bidaya wa al-Nihaya, Rashid al-Din's Jami al-Tawarikh, Ata-Malik Juvayni's Tarikh-i Jahangushay, and the broader chronicle tradition, with modern scholarship from Michal Biran, Timothy May, Lost Islamic History, and the Yaqeen Institute.

Content Warning: This episode describes the 1258 sack of Baghdad, the mass killing of its population, and the execution of the last Abbasid khalifa, handled factually and without graphic detail.

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This is the first episode of a five part series on the Mongol invasions of the Muslim world, and the astonishing reversal that followed. It opens with a survivor of the sack of Bukhara, who summed up the fate of his city in nine words, and then pulls back to show the world as it stood before the catastrophe: Baghdad, capital of the Abbasid khilafa for nearly five hundred years, a metropolis of close to a million people, home to the learning of the House of Wisdom, the center of a connected civilization that stretched from Muslim Spain to the frontiers of India. A world that felt permanent.

Then it turns to the cold grasslands of Mongolia, and to Temujin, the boy who survived a brutal childhood to unite the warring tribes of the steppe and become Genghis Khan. We look closely at the war machine he built, the discipline and the speed and the deliberate use of terror, and at how this did not begin as a holy war at all. It began as a trade dispute. A caravan seized at the frontier city of Otrar, hundreds of merchants killed, an ambassador mutilated and sent back, and a point past which there was no return. In 1219 the storm broke over Central Asia, and the great cities of the eastern Muslim world, Bukhara and Samarkand and the ancient centers of Khurasan, began to fall.

The episode handles the violence the way the Muslim chroniclers did, soberly and without sensationalism, and it is honest about what the sources can and cannot prove, from the famous speech attributed to Genghis Khan in the mosque of Bukhara to the disputed casualty figures. It closes with the historian Ibn al-Athir, who lived through these years and could barely bring himself to write them down, and with the storm turning, at last, toward Baghdad.

Sources: Ibn al-Athir's al-Kamil fi al-Tarikh, Ata-Malik Juvayni's Tarikh-i Jahangushay (History of the World Conqueror), Ibn Kathir's al-Bidaya wa al-Nihaya, and Rashid al-Din's Jami al-Tawarikh, with modern scholarship from Michal Biran, Timothy May, Lost Islamic History, and the Yaqeen Institute.

Content Warning: This episode discusses the mass killing and destruction of the Mongol conquests of Bukhara, Samarkand, and the cities of Khurasan, handled factually and without graphic detail.

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If this episode helped you, share it with someone who needs to hear it. Assalamu alaykum, and we'll see you in the next one.