Guantanamo Bay Naval Base (also called GTMO and pronounced gitmo by the U.S. military because the airfield designation code is GTMO) is located on of land and water at Guantánamo Bay, Cuba, which the United States leased for use as a coaling and naval station in the Cuban–American Treaty of 1903 (for $2,000 until 1934, for $4,085 since 1938 until now). The base is on the shore of Guantánamo Bay at the southeastern end of Cuba. It is the oldest overseas U.S. Naval Base. Since 1959 Cuban Revolution, the Cuban government has consistently protested against the U.S. presence on Cuban soil and called it illegal under international law, alleging that the military base was imposed on Cuba by force. At the United Nations Human Rights Council in 2013, Cuba's Foreign Minister demanded the U.S. return the base and the "usurped territory", which the Cuban government considers to be occupied since the U.S. invasion of Cuba during the Spanish–American War in 1898.