This chapter covers King Ferdinand's planned series of Levantine conquests stretching from Egypt through the Holy Land to Greece, Turkey, and eastward into Asia. While the planned conquests never attained fruition, the chapter provides an analysis for the legal arguments upon which they were predicated. It also describes King Ferdinand's conquest of the kingdom of Naples, where he had obtained the title to the defunct crusader kingdom of Jerusalem. The seemingly symbolic title to Jerusalem served as the foundation for the legal arguments mentioned in the chapter on how King Ferdinand crafted a just war against non-Christian people both in the Mediterranean and beyond. The chapter also talks about the religious politics of the Mediterranean basin that played a vital role in the formulation of the legal doctrines that were subsequently applied in other spheres of expansion, allowing Ferdinand to portray himself as an evangelical prince and imbuing Spanish conquests in other regions with legal and moral legitimacy.