After 1898 direct intervention expanded in Latin America. The United States purchased Alaska from the Russian Empire in 1867 and annexed Hawaii in 1898. Following the Spanish-American war in 1898, the US added most of Spain's remaining colonies: Puerto Rico, Philippines, and Guam. Deciding not to annex Cuba outright, the U.S. established it as a client state with obligations including the perpetual lease of Guantánamo Bay to the U.S. Navy. The attempt of the first governor to void the island's constitution and remain in power past the end of his term provoked a rebellion that provoked a reoccupation between 1906 and 1909, but this was again followed by devolution. Similarly, the McKinley administration, despite prosecuting the Philippine–American War against a native republic, set out that the Territory of the Philippine Islands was eventually granted independence. In 1917, the US purchased the Danish West Indies (later renamed the US Virgin Islands) from Denmark and Puerto Ricans became full U.S. citizens that same year. The US government declared Puerto Rico the territory was no longer a colony and stopped transmitting information about it to the United Nations Decolonization Committee. As a result, the UN General Assembly removed Puerto Rico from the U.N. list of non-self-governing territories. Four referenda showed little support for independence, but much interest in statehood such as Hawaii and Alaska received in 1959.