Mauritius: Has Mauritius Lost Its Agency in the Chagos Deal?

What the report says

An Institute for Security Studies analysis published by AllAfrica on 16 October 2026 says Mauritius’ long-running effort to regain sovereignty over the Chagos Archipelago has hit a new obstacle. The May 2025 deal was meant to transfer sovereignty to Mauritius while allowing Britain to keep extensive rights over Diego Garcia for 99 years, preserving the U.S. military base there. But implementation has stalled after the required legislation failed in Britain’s Parliament, and the article says Washington’s support also weakened amid wider tensions with London.

The piece argues that Mauritius’ success in securing British recognition of its sovereignty has not translated into control over the deal’s execution. Because the arrangement still depends on decisions by Britain and the United States, Mauritius has limited leverage, even though it could still consider legal action or other diplomatic steps. The article also says Mauritius’ longstanding willingness to accommodate U.S. security interests may have reduced its bargaining power rather than securing a final settlement.

The analysis places Diego Garcia’s strategic value at the center of the dispute, noting its role in long-range military operations and in U.S. planning around Iran. It also highlights three pressures running in parallel: fiscal strain in Mauritius, diplomatic uncertainty as existing base arrangements approach expiry in 2036, and growing concern among displaced Chagossians, many of whom are aging while the legal and political process drags on. The article suggests that further delay could make a return to the islands more difficult for that community.