Zengi, Nur al-Din, and the Second Crusade

CHAPTER 5 · 1144–1149 · The Crusades, 1095–1291

On Christmas Eve 1144, Zengi, the Turkish atabeg of Mosul and Aleppo, storms Edessa — the most exposed of the four states, a salient too far inland to be relieved from the sea. Watch its red turn to hatch in the north-east. But Edessa is more than a lost county. It gives the Muslim counter-crusade its first great victory and its first martyr-city, and it lets a new idea take hold: that the jihad against the Franks is a religious duty, not merely a local war. That idea did not spring up on its own — it was built, by poets, jurists and rulers, above all by Zengi’s son Nur al-Din, who made holy w

The turn: Edessa, 24 December 1144.

This chapter is one scene of an interactive atlas: the map repaints as the dates advance, campaigns draw themselves, and every chapter argues its causes and consequences — then a field exam asks you to prove it on the map.