The Principality of Sealand is a micronation located on an abandoned World War II fort, in the North Sea 10 km off the coast of Suffolk in England. Sealand is occupied by the family members and associates of a retired British Army major Paddy Roy Bates, who styled himself as “His Royal Highness Prince Roy of Sealand”. The population of Sealand rarely exceeds five, and its inhabitable area is 550 square meters. Although Sealand's claims to sovereignty and legitimacy are not recognized by any country, it is probably the world's best-known micronation, and is sometimes cited in debates as an interesting case study of how various principles of international law can be applied to a territorial dispute.

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