The Kingdom of the Netherlands consists of four constituent countries: the Netherlands, Aruba, Curaçao and Sint Maarten. There is a difference between the Kingdom of the Netherlands and the Netherlands: the Kingdom of the Netherlands is the comprehensive sovereign state, while the Netherlands is one of its four countries. Three Caribbean islands (Aruba, Curaçao and Sint Maarten) are the three remaining constituent countries. Three other Caribbean islands (Bonaire, Sint Eustatius and Saba) are special municipalities within the country of the Netherlands. Until its dissolution in 2010, the islands had formed the Netherlands Antilles, with the exception of Aruba, which left the grouping in 1986.