Chagos Deal: UK Says Mauritius Has Pledged to Protect Marine Environment

The United Kingdom has publicly stated that Mauritius has made a formal commitment to protect the marine environment of the Chagos Islands — a significant detail to emerge as the two countries continue negotiations over the future of the archipelago in the Indian Ocean. The British government's assertion underscores one of the key conditions London is attaching to any final sovereignty agreement: that the extraordinary biodiversity of the Chagos marine ecosystem must be preserved under Mauritian administration. **What are the Chagos Islands and why do they matter?** The Chagos Archipelago — officially known as the British Indian Ocean Territory (BIOT) — is a group of islands located roughly 1,750 kilometres south of the Maldives. It is home to one of the world's largest and most pristine marine protected areas (MPAs), covering more than 640,000 square kilometres of ocean rich in coral reefs, fish stocks, and endangered species. Mauritius has long claimed sovereignty over the islands, a position supported by a landmark 2021 International Court of Justice advisory opinion and a United Nations General Assembly resolution. The UK and Mauritius began formal negotiations in 2022, and a framework agreement was announced in October 2024 under which Britain would cede sovereignty of the islands to Mauritius while retaining a 99-year lease on the Diego Garcia military base — a strategically vital installation shared with the United States. **The marine protection commitment** By affirming that Mauritius has pledged to protect the marine environment, London appears to be signalling that environmental stewardship is a core pillar of any final deal — not an afterthought. The Chagos MPA, established by the UK in 2010, is frequently cited as one of the most important ocean conservation zones on the planet. Critics and conservation groups have previously raised concerns about whether a transfer of sovereignty could weaken protections, particularly around fishing rights. The UK's public confirmation of Mauritius's commitment is likely intended to reassure both domestic audiences and international conservation partners. **What this means** For Mauritius, the acknowledgement by London is both a diplomatic milestone and a responsibility. If and when sovereignty is formally transferred, Port Louis would be expected to uphold — and potentially expand — the marine protected area around Chagos. This could have implications for Mauritian fishermen, regional fishing agreements, and the country's own environmental governance frameworks. The deal also remains politically sensitive. In the UK, the agreement has faced opposition from Conservative MPs and some US officials who have questioned the wisdom of ceding control near the Diego Garcia base. The change of administration in Washington under President Donald Trump added further uncertainty earlier in 2025. No final treaty has been signed, and negotiations are ongoing. However, the UK's latest statement suggests both sides are continuing to move toward a workable framework — with environmental protection firmly on the table. Source: Le Defi Media