The Commonwealth of Puerto Rico also Porto Rico (archaic) and more commonly Puerto Rico, is a United States territory with Commonwealth status located east of the Dominican Republic in the northeastern Caribbean. Puerto Rico, the smallest of the Greater Antilles, includes the main island of Puerto Rico and a number of smaller islands and keys, the largest of which are Mona, Vieques, and Culebra. The nature of Puerto Rico's political relationship with the United States is the subject of ongoing debate in the island and also in the United Nations. Those who support maintaining the status quo (i.e., Commonwealth status) insist that upon attaining this status, Puerto Rico entered into a voluntary association with the U.S. "in the nature of a compact", but opponents of Commonwealth disagree: according to some, Puerto Rico is an unincorporated organized territory of the United States, subject to the plenary powers of the United States Congress; and to others, a colony with the right to govern itself as an independent country.