Terry Jones describes how the crusaders lost Jerusalem in 1144 to Zengi,
the Arab leader. A second crusade fell foul of Zengi's son, Nur el-Din,
who planned to surround the crusaders by gaining control of Egypt. For
this he employed a Kurdish general - Shirkuh - and his nephew Saladin.
After Nur el-Din's mysterious death, Saladin succeeded him in Damascus, a
daunting figure who was wholly committed to the jihad, or holy war.