The overwhelming majority of Gibraltarians strongly oppose this, along with any proposal of shared sovereignty. UN resolutions call on the United Kingdom and Spain to reach an agreement over the status of Gibraltar. The Spanish claim makes a distinction between the isthmus that connects the Rock to the Spanish mainland on the one hand, and the Rock and city of Gibraltar on the other. While the Rock and city were ceded by the Treaty of Utrecht, Spain asserts that the "occupation of the isthmus is illegal and against the principles of International Law". The United Kingdom relies on de facto arguments of possession by prescription in relation to the isthmus, as there has been "continuous possession [of the isthmus] over a long period". Another dispute surrounds the Savage Islands, which Spain acknowledges to be part of Portugal. However, Spain claims that they are rocks rather than islands, and therefore Spain does not accept the Portuguese Exclusive Economic Zone (200 nautical miles) generated by the islands, while acknowledging the Selvagens as possessing territorial waters (12 nautical miles). On 5 July 2013, Spain sent a letter to the UN expressing these views. Spain claims sovereignty over the Perejil Island, a small, uninhabited rocky islet located in the South shore of the Strait of Gibraltar. The island lies just off the coast of Morocco, from Ceuta and from mainland Spain. Its sovereignty is disputed between Spain and Morocco. It was the subject of an armed incident between the two countries in 2002. The incident ended when both countries agreed to return to the status quo ante which existed prior to the Moroccan occupation of the island. The islet is now deserted and without any sign of sovereignty. Besides the Perejil Island, the Spanish-held territories claimed by other countries are two: Morocco claims the Spanish cities of Ceuta and Melilla and the plazas de soberanía islets off the northern coast of Africa. Portugal does not recognise Spain's sovereignty over the territory of Olivenza which was annexed by Spain in 1801 after the War of the Oranges. The Portuguese stance is that the territory is de iure Portuguese territory and de facto Spanish. Military The armed forces of Spain are known as the Spanish Armed Forces (Fuerzas Armadas Españolas). Their commander-in-chief is the King of Spain, Felipe VI. The next military authorities in line are the Prime Minister and the Minister of Defence. The fourth