Chagos island: The UK Last Colony and American Colony
The Chagos Islands have been in the news a lot recently due to talks between the UK and Mauritius over control. Currently, they are a British Overseas Territory (UKOT), but the islands host a joint UK-US military base. The Americans lease the islands from the British, who, rather controversially, expelled the original inhabitants and replaced them with Americans working for the military.
Why Do the Islands Matter?
The Chagos Islands are slap bang in the middle of the Indian Ocean, with Africa to the west, the Middle East to the north, and Asia to the east. Back in the 1960s, during the Cold War, the Americans were worried about the Soviets and wanted a stable spot for a military base. The Middle East was a major focus at the time, and the 1970s were full of upheaval there. The UK kept the islands when Mauritius became independent because they were seen as vital for containing the Soviet Union. For decades, UK and US foreign policy have been closely tied, and the islands are just one example of that.
A Bit of History
For most of history, nobody lived on the islands. They were claimed by the French colony that became Mauritius, which eventually turned into a British colony. After Napoleon lost in 1815, Mauritius and the Chagos Islands were handed over to the British. The British had already redrawn maps, taking the islands away from the Maldives. Back then, there weren’t official borders or legal frameworks, but those decisions are still causing arguments today. For example, the Maldives is much closer to the Chagos Islands than Mauritius, which has led to disputes over fishing rights and sovereignty.
The first British colony on the islands was set up in 1793. Enslaved people were brought in to work on coconut plantations, and their descendants lived there until they were forcibly removed in the 1960s. Slavery was abolished in 1834, and by 1840, many of the islanders were descendants of freed slaves.
The Expulsion of the 1960s
In November 1965, the UK bought the entire Chagos Archipelago from Mauritius (which was self-governing at the time) for £3 million, creating the British Indian Ocean Territory. The plantations on the islands weren’t profitable due to competition from other oils and lubricants, making the economy unsustainable. The islands were closed to make way for military activities, and the population was forcibly removed.
Between 1967 and 1973, the UK expelled the islanders, sending them to Mauritius and the Seychelles. An agreement with the US required the islands to be uninhabited for military purposes. The Mauritian government resisted taking in more displaced islanders without compensation, so in 1973, the UK agreed to pay reparations. It’s a dark chapter in British history, adding to the country’s colonial legacy.
Legal Fights
Brexit hasn’t helped the UK’s reputation or influence, making it harder to rely on allies for diplomatic cover. For decades, no court would hear the case of the Chagos Islands. The European Court of Human Rights refused in 2012, which often gets overlooked. But in 2015, Mauritius won a case about fishing rights, with a ruling that the marine protected area around the islands was illegal. This boosted Mauritius’s claim.
In February 2019, the International Court of Justice (ICJ) ruled that the UK should return the islands to Mauritius. The ruling wasn’t legally binding, but it added pressure. International law and global opinion have shifted against the UK.
Negotiations
When Boris Johnson was PM, he started talks about returning the islands. Liz Truss continued the process, and now, after two years, Keir Starmer has reached a deal. Under the agreement, sovereignty over the islands would go to Mauritius, but the UK-US military base would remain. You can read the deal here.
Not everyone is happy. The Chagossians were left out of the decision-making process about their homeland. The Maldives isn’t thrilled either, as the deal overrides its claims. It’s another messy outcome of Britain’s map-redrawing and colonial history. But the Maldives has supported Mauritius’s claim. Why? Likely for favoured access to fishing rights or other political interests. With pressure on the UK, Mauritius is likely to take ownership. Why jeopardise relations between Mauritius and the Maldives?
The Fallout
The deal has had a mixed reaction in the UK. Critics from across the political spectrum have attacked it, and the media has jumped on it as an opportunity to bash Labour. What’s frustrating is how many commentators ignored the issue when Boris Johnson or Liz Truss were involved. A quick search shows barely any articles from those same pundits. Now, they’re using it to attack a working-class leader without offering real insights. It’s more about scoring political points than genuinely caring about the islands.
Searching Hansard’s House of Commons records shows Chagos was mentioned about four times per year for decades. Mentions only started increasing in the 2000s, with 15 in 2001, 20 in 2016, and 34 in October 2024 when the deal was announced. Similar numbers appear when searching for “Chagos Islands” or “British Indian Ocean Territory.”
Geopolitics
The world has changed. Climate change means rising sea levels threaten the Chagos Islands. Mauritius has been getting closer to China, and the US isn’t the reliable ally it once was. If the base is so vital, why hasn’t the UK strengthened it or taken control? Why has the UK done so little about climate change? Instead, defence spending has been cut, and Britain’s influence is fading. Some critics still have an imperial mindset, refusing to accept that the UK is now a middle power with limited sway. Meanwhile, Starmer, being a lawyer, followed the ICJ’s judgment on principle, even though it wasn’t binding. The deal allows the base to stay under a 50-year lease, with payments to Mauritius for resettlement. Islanders can return, but not near the base.
The Trump Factor
Donald Trump’s likely return to the White House could complicate things. Any agreement about the UK-US base will need his approval, and he’s unpredictable. With the US growing more confrontational with China, the base becomes even more important. The region has seen countries drift away from America and the West. When Trump was first elected, the UK used him as an excuse to avoid tough decisions. Now, Britain is trying to stay close to both the EU and the US, which isn’t easy. Critics complain about Britain’s declining status but don’t want to fund the military properly.
What Do We Do?
Writing this blog post has been an eye-opener. I’ve learned about a dark bit of our colonial history that I knew little about before. Honestly, I’m torn on what we should do. The main options are:
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A: Accept the deal with Mauritius. It’s practical, closes a dark chapter, and restores the UK’s global reputation.
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B: Offer the Maldives the islands. Politically difficult, undermines international law, and seen as bad faith.
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C: Offer the Chagossians ownership. Legally complex, diplomatically risky, and seen as illegitimate by many.
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D: Ignore the issue. The deal is politically toxic, and without US support, it may stall.
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E: Seek an EU deal. Unlikely, as the EU wouldn’t bypass international law, and trust in the UK is low.
The most realistic options are A (since a deal exists) and D (due to political challenges in passing it).
Torn on What to Do
I’d love to return the islands to the Chagossians and give them a choice, but it would be costly and politically fraught. The islands have military value, and maybe the lesson here is that we should get closer to Europe. Striking a deal with the US and Europe could be beneficial. It could also help tackle issues like African migration and piracy. However, aligning more with Europe risks conflict with an independent-minded America.
Final Thoughts
The Chagos Islands debate exposes uncomfortable truths about Britain’s colonial past and declining influence. Some see the deal as a humiliation; others view it as a pragmatic step in a changing world. The real issue is that parts of the UK still haven’t come to terms with the loss of empire. The question is: can Britain adapt to its new reality, or will it keep clinging to a fantasy?