UK to relinquish sovereignty in historic move amid geopolitical concerns
Prime Minister Sir Keir Starmer is expected to formally sign off on the long-contested Chagos Islands deal on Thursday, in what would mark a historic shift in British foreign policy. According to reports, a virtual handover ceremony will take place between UK and Mauritian officials, during which sovereignty of the British Indian Ocean Territory will be ceded to Mauritius.
The agreement follows years of international legal pressure and United Nations rulings that have consistently backed Mauritius’s claim to the Chagos archipelago, which includes the strategic island of Diego Garcia. The UK government has acknowledged that it must comply with these legal findings, despite political controversy surrounding the decision.
Under the terms of the agreement, Britain will hand over sovereignty of the island chain but retain use of its key military base on Diego Garcia through a 99-year lease. The base, which is jointly operated with the United States, is one of the most strategically important Western military facilities in the Indian Ocean and has been pivotal in operations across the Middle East and Asia.
According to The Telegraph, the deal could also include a 40-year extension of the current military lease, which will be crucial in reassuring both British and American defence officials. The Prime Minister’s participation in Thursday’s ceremony is expected to signal the Government’s commitment to the transition, even as it continues to emphasise national security interests.
Following the signing, ministers are expected to deliver a statement in the House of Commons to outline the key details of the agreement and its implications.
While the move is being hailed by many as a long-overdue act of decolonisation, it has provoked a fierce response from political critics and international observers. Some Conservative MPs have voiced alarm over the geopolitical consequences, warning that the shift could open the door to greater Chinese influence in the region.
China has increasingly sought to establish a foothold across the Indian Ocean, and opponents of the deal fear Mauritius could eventually allow Beijing access to the region, either economically or militarily — an allegation the Mauritian government has repeatedly denied.
There had been speculation in recent weeks that the deal was faltering amid mounting political sensitivity. The Times described the agreement as having become “toxic”, with Labour facing criticism over its transparency and approach to the handover process. Nevertheless, today’s expected announcement suggests a resolution has been reached behind the scenes.
Labour’s decision to proceed with the deal has also been met with scrutiny due to the previous Conservative government’s role in initiating talks with Mauritius. Despite criticism now coming from the Tory benches, it was under their leadership that initial negotiations with Port Louis began in earnest, a point not lost on Labour MPs defending the move.
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Defence Secretary John Healey addressed concerns in Parliament earlier this week, stating, “The base on Diego Garcia is essential to our national security and our ongoing defence relationship with the United States.” He added, “We’ve had to act, as the previous government started to do, to deal with that jeopardy. We’re completing those arrangements and will report to the House when we can.”
The Chagos Islands, which were separated from Mauritius in 1965 prior to its independence, have long been the subject of a contentious sovereignty dispute. The UK forcibly removed the Chagossian people from their homeland in the 1960s and 70s to make way for the military base, a decision that has been widely condemned.
Mauritius has pledged to uphold the security arrangements around Diego Garcia while also supporting the resettlement of Chagossians who wish to return to the islands.
Today’s announcement, if confirmed, will represent the culmination of decades of diplomatic wrangling — and a new chapter for both British overseas territories and the people of Chagos.
