His father Hugh attempted to stop his desire to lead a new crusade and retake Jerusalem, but upon his death Peter began his plans in earnest. He travelled through Europe attempting to garner support for his expeditions and on 11 October 1365 he led a mixed Cypriot and Western force of Crusaders on 70 ships to sack Alexandria (see Alexandrian Crusade). However, the European knights refused to follow him to attack Cairo, and he was obliged to return to Cyprus, the only permanent result of his expedition being the enmity of the Sultan of Egypt. Reprisals followed against Christian merchants in Syria and Egypt, and Pope Urban V advised Peter to make peace with the Sultan after unsuccessfully attempting to raise support among the European monarchs.