Britain Freezes Chagos Islands Handover as Diego Garcia Proves Vital i

Britain has effectively frozen its plan to hand over the Chagos Islands to Mauritius after sustained opposition from President Trump, who called the deal "an act of GREAT STUPIDITY." The decision comes as the Diego Garcia military base, the jewel of the Chagos archipelago, has proven strategically indispensable in the ongoing Iran war, serving as a launchpad for American bomber strikes against Iranian targets over 4,000 kilometers away.

The UK government acknowledged on April 11 that legislation to ratify the handover has been excluded from the upcoming King's Speech on May 13, which sets the government's legislative agenda. A government spokesperson maintained: "We continue to believe the agreement is the best way to protect the long-term future of the base," but admitted: "We have always said we would only proceed with the deal if it has US support."

Former UK Foreign Office civil servant Simon McDonald told BBC Radio that Trump's hostility forced the agreement to "go into the deep freeze for the time being. When the president of the United States is openly hostile, the government has to rethink."

From colonial crime to strategic necessity

The story of Diego Garcia is one of the most shameful episodes in modern British colonial history. In the 1960s, the UK and US secretly agreed to build a military facility on the atoll. To clear the way, Britain separated the Chagos Archipelago from Mauritius in 1965, creating the British Indian Ocean Territory, the last colony the UK established, and then falsely claimed the islands had no permanent population.

Between 1968 and 1973, the entire Chagossian population of approximately 1,000-2,000 people was systematically removed. Removal tactics included restricting supplies, refusing to allow returning residents back, and ordering the killing of their pets. The displaced Chagossians were dumped in Mauritius and the Seychelles, where many lived in poverty. A UK Foreign Office memo from 1965 stated bluntly: "The intention is that none of them shall be regarded as being permanent inhabitants."

In 2019, the International Court of Justice found that the separation of Chagos from Mauritius was "not based on a free and genuine expression of the will of the people concerned" and that the UK's continued administration "constitutes a wrongful act." The UN General Assembly voted 116 to 6 demanding UK withdrawal. Britain ignored both rulings.

PM Keir Starmer announced an agreement in October 2024 to transfer sovereignty to Mauritius while leasing back Diego Garcia for at least 99 years at a cost of £101 million per year. The treaty was signed on May 22, 2025. But Trump's opposition, intertwined with broader US-UK tensions over Iran (Starmer initially blocked American planes from using British air bases for strikes on Iran), has killed the deal's momentum.

Diego Garcia's role in the Iran war

The base's strategic value has never been clearer. Home to approximately 2,500 mostly American personnel, Diego Garcia features a long runway accommodating B-2 stealth bombers and a deep natural harbor for nuclear submarines. It hosts B-52 and B-1 strategic bombers permanently and ships loaded with equipment to support an entire marine brigade at short notice.

During the Iran war, Diego Garcia served as a launch platform for American bomber strikes. Starmer allowed strikes on Iran's missile sites from Diego Garcia but not other targets. The base's importance was dramatically underscored on March 21, 2026, when Iran launched two intermediate-range ballistic missiles at Diego Garcia, approximately 4,000 kilometers away, double Iran's previously acknowledged missile range. Neither hit the base: one failed mid-flight and a US warship intercepted the other. But the attack revealed previously unknown Iranian capability.

Today, an estimated 10,000 displaced Chagossians and their descendants live in Britain, Mauritius, and the Seychelles. In February 2026, four Chagossians landed on Île du Coin without government permission to reestablish settlement, a small act of defiance against half a century of exile. The Mauritius deal allows resettlement on outer islands but excludes Diego Garcia entirely.

The Chagossians remain caught between great power politics and their own right to return, a situation that grows more intractable as Diego Garcia's military importance intensifies with each new conflict.