After Hattin, the Crusader States lay at Saladin’s mercy. The Muslim warlord swept into the Kingdom of Jerusalem. Cities and castles fell to his armies. On October 2, 1187, he entered Jerusalem. Yet Saladin was unable to seize all of the Franks' ports. The Third Crusade, led by the formidable King Richard the Lionheart of England, was able to enter the Middle East and save the Crusader States from complete conquest. In the century after Hattin, crusading reached its climax. The Crusades would only come to an end in 1291, when a new Muslim power, the Mamluks of Egypt, captured Acre, the last remnant of the Kingdom of Jerusalem.