Maldivian President Mohamed Muizzu's request that British Prime Minister Andy Burnham reopen negotiations over the Chagos Archipelago adds another claimant and another layer of complexity to one of the Indian Ocean's most enduring territorial disputes. Until now, the diplomatic argument has primarily involved Britain, which administers the islands; Mauritius, which claims sovereignty; the United States, which operates a major military facility on Diego Garcia; and the Chagossians