UK–Mauritius May 2025 agreement recognises Mauritian sovereignty over Chagos Archipelago
US President Donald Trump criticised the UK’s potential return of Diego Garcia to Mauritius, citing a vital US military base. Under a May 2025 UK–Republic of Mauritius agreement, Mauritius is recognised as sovereign over the entire Chagos Archipelago, including Diego Garcia, a coral atoll in the central Indian Ocean. The UK administered Chagos as BIOT since 1965 and retains a 99-year lease on Diego Garcia, hosting a joint UK–US military facility.





