The Siege of Jerusalem took place from September 20 to October 2, 1187. It resulted in the recapture of Jerusalem by Saladin and the near total collapse of the crusader Kingdom of Jerusalem. This provoked the Third Crusade by providing it with its principal goal - to return Jerusalem to Christendom a second time.
Source/Attribution
Wikipedia
Added Mon, Jul 20 2009 at 7:06PM UTC by