The UK government has shelved its plan to transfer sovereignty of the Chagos Islands to Mauritius, following strong opposition from US President Donald Trump. The decision comes as legislation to formalize the deal is set to expire in Parliament without being reintroduced.
Core Facts
The UK and Mauritius agreed in May 2025 to transfer sovereignty of the Chagos Islands, including the strategic Diego Garcia military base, to Mauritius while leasing the base back for 99 years. The deal required US approval, which was initially supported but later withdrawn by Trump, who called it an "act of great stupidity." The UK government has stated it will only proceed with the deal if the US provides formal backing.
Deeper Context
Strategic Importance of Diego Garcia
Diego Garcia is a critical military asset for both the UK and US, serving as a key base for joint operations. The UK government has emphasized that ensuring the base's long-term security is the primary reason for the deal. The base has been used for "defensive operations" in the UK's conflict with Iran, with US forces permitted to conduct strikes from the location.
Political and Diplomatic Reactions
Mauritius has vowed to pursue diplomatic and legal avenues to reclaim the islands, calling the decolonization process a matter of justice. The UK government has acknowledged the deal's importance but stressed that US support is essential for its implementation. Conservative leader Kemi Badenoch has criticized the deal, calling it a "surrender" and praising its abandonment.
Alternative Plans and Legal Challenges
UK officials are reportedly exploring alternatives, including potential resettlement of the Chagos Islands for the displaced Chagossians. Legal representatives for the Chagossians have submitted a request to the United Nations, alleging "crimes against humanity" in the deal's handling. The UK's decision has also strained relations with the US, particularly over Starmer's reluctance to fully support US-led military actions in the Middle East.
Financial and Legal Details
Under the proposed deal, the UK would pay Mauritius approximately £101 million annually to lease Diego Garcia. The agreement aimed to resolve long-standing sovereignty disputes while maintaining military operations. The lack of formal US approval has prevented the UK from proceeding, despite initial support from the US State Department.