Chagos Deal: Mauritius and UK Set December 2026 Deadline

Mauritian Prime Minister Navin Ramgoolam and his British counterpart Jonathan Powell have agreed to work toward a December 2026 deadline for the ratification of the landmark agreement on the Chagos Archipelago. A new round of talks between the two countries' negotiating teams is also expected in the coming weeks.

The United Kingdom has not yet formally ratified the accord, which recognises Mauritius's sovereignty over the Chagos Islands, also known as the British Indian Ocean Territory. The agreement, which was first announced in principle in 2024, has faced repeated delays on the British side amid shifting political pressures in London.

The Chagos Islands sit roughly 1,700 kilometres from mainland Mauritius in the central Indian Ocean. The archipelago has been under British control since 1965, when it was separated from Mauritius before the country's independence in 1968. The United Kingdom later leased Diego Garcia, the largest island, to the United States for a major military base that both Washington and London consider strategically vital.

The dispute over sovereignty has been the subject of international arbitration and United Nations rulings, most of which found that the separation of Chagos from Mauritius was unlawful under international law. Thousands of Chagossian islanders were forcibly removed from the territory between the 1960s and 1970s to make way for the military base, and their right to return remains a deeply sensitive issue.

Setting a formal deadline of December 2026 represents a significant step, as previous timelines have slipped without a binding commitment from either side. By naming an end-of-year target, both governments are signalling they want to move the process forward, even as final details around the military base, compensation for displaced Chagossians, and the precise terms of Mauritian sovereignty continue to be negotiated.

What this means: For Mauritius, ratification would represent the conclusion of a decades-long campaign to reclaim sovereignty over territory it has always argued was illegally detached. For ordinary Mauritians, it could bring financial resources linked to the agreement and restore a sense of national completeness. For investors and diplomats watching the Indian Ocean region, the outcome will have implications for how the UK, the US, and small island states manage competing strategic and legal interests in the years ahead. The December 2026 deadline gives both sides roughly 18 months to resolve outstanding sticking points and push the accord through their respective legislative processes.

Source: Le Defi Media