Starmer Permanently Abandons Chagos Islands Deal After Trump’s “Act of Great Stupidity” Tirade — Diego Garcia Base Stays British Indefinitely

The British government has permanently shelved its agreement to hand the Chagos Islands to Mauritius, confirming on Saturday that the deal cannot proceed without American support. The collapse of the painstakingly negotiated accord — which would have seen the UK pay £101 million a year for a 99-year lease on the Diego Garcia military base — marks the latest casualty of Donald Trump’s systematic demolition of the transatlantic relationship and leaves Starmer facing accusations of diplomatic weakness from all directions.

What happened

The Chagos deal was first announced in October 2024 with full American backing. Under its terms, the UK would have ceded sovereignty over the archipelago to Mauritius while retaining operational control of Diego Garcia — the remote Indian Ocean atoll that houses one of the most strategically important US military installations on the planet. The deal was supposed to resolve a decades-old colonial injustice: Britain forcibly expelled the Chagossian people in the 1960s and 1970s to make way for the American base, and the International Court of Justice ruled in 2019 that the UK’s continued sovereignty was unlawful.

Trump destroyed the agreement in stages. In January 2025, he branded the handover an “act of great stupidity” as part of a broader offensive against European territorial concessions. In February, he posted “DO NOT GIVE AWAY DIEGO GARCIA!” on Truth Social, explicitly linking the base to potential operations against Iran. When the Iran war began in late February 2026, Diego Garcia became operationally critical — B-2 bombers and surveillance aircraft have been staging from the atoll — and any remaining American appetite for the deal evaporated entirely.

Why the deal is dead

The British government acknowledged on Saturday that legislation to ratify the agreement had run out of parliamentary time. But the real reason is strategic: the deal required active US cooperation, and Washington under Trump was never going to provide it. Downing Street officials briefed that the agreement was “impossible to implement” without American consent on basing arrangements, and that pushing ahead against Trump’s explicit opposition would have caused a transatlantic rupture Starmer could not afford during the Iran crisis.

The decision is deeply uncomfortable for Starmer. He has spent weeks positioning Britain as a moral counterweight to Trump on Iran, refusing to allow UK bases to be used for strikes on civilian infrastructure and building a 40-nation coalition to reopen the Strait of Hormuz. But on Chagos, he has effectively done what Trump told him to do — and the optics of a Labour prime minister bowing to a Republican president on a colonial justice issue are brutal.

The Chagossian dimension

For the Chagossian diaspora — scattered across Mauritius, the Seychelles and the UK since their forced removal — the deal’s collapse is devastating. The agreement would have allowed resettlement on every island in the archipelago except Diego Garcia itself, and included a fund to support the community’s return. That prospect has now vanished indefinitely. Chagossian community leaders have called the British government’s decision a “second betrayal” and accused Starmer of prioritising Washington over justice.

Mauritius, which had invested significant diplomatic capital in the agreement, has signalled it will take the matter back to the International Court of Justice. The legal and moral arguments have not changed — the ICJ ruling remains on the books — but the political reality has shifted decisively. With the Iran war ongoing and Diego Garcia serving as a critical staging post, no British government is going to hand the islands over while bombs are still falling.

What comes next

The immediate political fallout for Starmer is manageable but corrosive. Conservative and Reform critics will mock his inability to stand up to Trump on this issue while claiming to defy him on Iran. Labour’s left will see it as proof that Starmer’s foreign policy independence is performative rather than principled. The Chagossian community will feel abandoned for a second time by a British government that promised them justice.

The deeper significance is structural. The Chagos collapse demonstrates that British sovereignty decisions are now effectively subject to an American veto — not through any formal mechanism, but through the sheer gravitational pull of the transatlantic relationship during wartime. Starmer can rebuke Trump on NATO, refuse him basing rights for civilian strikes and build coalitions that exclude Washington, but when it comes to a rock in the Indian Ocean that houses American bombers, the PM does what the President demands. That asymmetry will define Britain’s post-war diplomatic position for years to come.