The Battle of Al Mansurah was fought from February 8 -11, 1250, between Crusaders led by Louis IX, King of France, and Ayyubid forces led by Emir Fakhr-ad-Din Yusuf, Faris ad-Din Aktai and Baibars al-Bunduqdari. Despite being overwhelmed and ultimately defeated, King Louis IX tried to negotiate with the Egyptians, offering the surrender of the Egyptian port of Damietta in exchange for Jerusalem and a few towns on the Syrian coast. The Egyptians rejected the offer, and the Crusaders retreated to Damietta under cover of darkness on April 5, followed closely by the Muslim forces. The Seventh Crusade's defeat in Egypt in 1250 marked a turning point for all the existing regional parties. Egypt again proved to be Islam's stronghold. Western kings, except Louis IX, lost interest in launching new crusades. The Seventh Crusade was the last major crusade against Egypt and the Crusaders never recaptured Jerusalem.