Louis' initial plan was to descend on the coast of Outremer by way of Cyprus. However, a new plan was developed in 1269, wherein the fleet would first descend on Tunis. This change has often been attributed to the King's brother Charles of Anjou, whose newly-conquered Kingdom of Sicily would benefit from a renewal of its traditional influence on Tunis. However, the details of Charles' preparations suggest that he was not initially aware of the change of plans, which originated at the French court. Louis may have thought that Tunis was an important base of supplies for Egypt; Geoffrey of Beaulieu stated that the King thought that the Khalif of Tunis, Muhammad I al-Mustansir, might be persuaded to convert to Christianity, if given military support.