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The siege of Baghdad took place in early 1258 when a large army under Hulegu, a prince of the Mongol Empire, attacked Baghdad, the capital of the Abbasid Caliphate. Hulegu had been sent by his brother, the Mongol khan Möngke, to conquer Persia. He expected Baghdad's ruler, Caliph al-Musta'sim, to reinforce his army, but this did not happen. Provoked by al-Musta'sim's arrogance, Hulegu decided to overthrow him. The Mongol army routed a sortie by flooding their camp, and besieged the city. After Mongol siege engines breached Baghdad's walls, al-Musta'sim surrendered on 10 February, and was later executed. The Mongol army pillaged the city for a week. The number of deaths was inflated by epidemics of disease, but Hulegu estimated his soldiers killed 200,000. The siege, often seen as the end of the Islamic Golden Age, was in reality not era-defining: Baghdad later prospered under Hulegu's Ilkhanate. (Full article...) Recently featured: Japanese battleship Tosa Lise Meitner Battle of Mount Austen, the Galloping Horse, and the Sea Horse

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