PARLIAMENTARY DEBATE
Diego Garcia and British Indian Ocean Territory - 25 February 2026 (Commons/Commons Chamber)
Debate Detail
When we came into government, it was clear that our ability to maintain our interest and control in the base was under threat, so this Government had to take action to protect our military advantage and to stop our adversaries gaining a hold in such a strategically important part of the world. Refusing to act could have exposed one of our most valuable military assets to China, so, as any responsible Government would, we negotiated a deal to protect our interests.
This Government inherited a situation where the operation of the base was in immediate jeopardy, and negotiations on a transfer of sovereignty to Mauritius were well advanced by the previous Government. The deal delivers on our objective of maintaining the secure, effective operation of this vital military base. It would allow us to operate this joint UK-US base as we have always done.
This House knows that the Government worked tirelessly with the United States in developing and testing the treaty to ensure that it met our shared security needs. That is why it was supported by two Administrations and why Secretaries Rubio and Hegseth, and indeed President Trump himself, came out so strongly in favour when the treaty was signed in May last year. I can assure this House that nothing in the treaty has changed since the US Administration gave their original endorsement of the deal, and we continue to work with Mauritius and the United States.
The UK Government have great sympathy for the Chagossian community. They feel a deep emotional connection with these islands. We have been clear in our regrets for the manner in which Chagossians were forcibly removed from the islands in the ’60s and ’70s. We are working to resume a programme of heritage visits for members of the community.
We will continue to work with both Mauritius and the United States on the agreement. As the Prime Minister has said, we have very close relations with the United States. That relationship matters profoundly not just to our security, but to the prosperity and stability on which people here at home depend.
“DO NOT GIVE AWAY DIEGO GARCIA!”
Capital letters from the American President—he likes capital letters in his posts. All the other arguments have been well rehearsed: the fact that it could cost us up to £50 billion; and the fact that the Chagossians were not just badly treated then, but are being badly treated now. They have resettled Île du Coin and have eviction notices from this Government.
But I can tell the House this from my trip to the Maldives at the weekend—something I had not realised, and I do not know whether the Government know it either. It is the Maldives that has the historical links with the Chagos Islands, in terms of trade and archaeology. In fact, all the French did was rename the islands from the Maldivian language. There is no basis—historically or culturally, in any way—for Mauritius to have a claim on the islands.
The Maldives is upset for two reasons. There has been great stability in the region for decades. If the treaty goes through, we will finish up with a turf war in the region between India and China. Indeed, that has already started. I wish to inform the Government that, in my opinion, we are just a few days away from the Maldives issuing a counterclaim in the International Court of Justice to say that if anybody has the right to the sovereignty of those islands, it is the Maldives and not Mauritius. I urge the Government to pause all of this.
The hon. Member says, “Well, what has changed?” Clearly, the view of the US President may well have changed, but the treaty has not. We have discussed the treaty in great detail in this House. The treaty emerges from talks initiated by the previous Government and completed—[Interruption.] Mr Speaker, I might find the chuntering on the Conservative Benches more plausible had I not been a Foreign Office diplomat during the period when, for 11 rounds, they were negotiating this deal. I understand that right hon. and hon. Members on the Conservative Benches now wish to distance themselves from the 11 rounds they conducted, but let us at least—[Interruption.]
The treaty is as it was signed. It is going through both Houses of Parliament. We are discussing it with our American colleagues. The fact that the hon. Member sought to take a selfie video on the islands does not change any of those facts.
This is also a national security crisis. Diego Garcia is one of the most strategically vital military bases in the world, yet Ministers are pressing ahead before resolving the binding 1966 UK-US treaty, before addressing concerns raised by President Trump, and without guaranteeing that the lease can never collapse or be legally challenged. On the United Nations convention on the law of the sea, will the Minister confirm that article 298 provides an opt-out from compulsory dispute settlement for military activities, meaning that this is a political choice, not an unavoidable legal trap?
Will the Government suspend the Bill until the legal position with the US is settled and any amendments have been scrutinised under the Constitutional Reform and Governance Act process? Will the Minister confirm whether the Pelindaba treaty would apply if Mauritius were to take sovereignty, and if so, what iron-clad safeguards protect our nuclear deterrent?
Finally, what of the British Chagossians, some of whom are now on the islands? Can the Minister guarantee that there will be no forced removal and that their rights will be protected in full? British sovereignty is not for sale, and this House should not be bounced into surrendering it.
I am sure that my hon. Friend knows it off by heart, but I will just remind him of page 120 of the Labour manifesto, which states:
“Defending our security also means protecting the British Overseas Territories and Crown Dependencies, including the Falklands and Gibraltar. Labour will always defend their sovereignty and right to self-determination.”
We have not even consulted the Chagossians. Will my hon. Friend not reconsider?
However, I must also acknowledge that the hon. Member’s platform has been created only because of the vacuum created by this Government, because the wheels have undoubtedly fallen off their negotiations. They have failed to secure the support and consent of Chagossians, and they now seem to have lost the support of the President of the United States too. While either one of those things might be considered unfortunate, the combination of the two looks deeply careless.
What is the status of the negotiations right now? What is the latest position of the United States? Will the Government also take on our very long-standing concerns about the rights of Chagossians? There is clearly not widespread consent here. Will they take on the points that we have made in amendment after amendment and recognise that Chagossians have the right to self-determine their own future? Will he also accept our concerns about the finances to ensure that Britain is not left as a leaseholder of these islands if a deal goes ahead without a sitting tenant?
I want to be clear that there has been an attempt to land—indeed, a successful one—on part of the British Indian Ocean Territory, and it was not an area fit for human habitation. British travel advice is very clear that one should not travel to that area. This House has discussed the sensitivity of this base and these islands on many occasions. I encourage everybody listening at home to attend to our travel advice, which is there for a reason.
On the question from my right hon. Friend the Father of the House, putting aside the wider Bill, as the Minister does not wish to discuss it, does article 298 of UNCLOS exempt military bases—very simply, yes or no? The Minister is a diplomat, so he knows the answer.
“Once you’ve been briefed, even partially, on what it”—
that is, the base on Diego Garcia—
“does the information gives you vertigo. Both now, and in government, communicating the details to the public would be violating the Official Secrets Acts.”
Given that this deal is going to cost the British taxpayer billions of pounds, does the Minister not believe that it should be incumbent on the Government to declassify some of the information so that we here in Parliament and the British public know what we are paying for?
On the question of Chagossian representation, the hon. Gentleman will know that there is considerable disagreement within that community, and that the prime minister to whom he refers is not internationally recognised.
I use these words cautiously because I know and like the Minister and I know and like the Secretary of State for Defence, but it seems to me that this House was inadvertently misled in the original statement, as is proven by subsequent answers to written questions. Will the Minister clarify that urgently, because it is a very serious parliamentary matter and a matter of national significance?
“Diego Garcia is a vital military base for the US. The UK’s very important deal with Mauritius secures the operational capabilities of the base and key US national security interests… We are confident the base is protected for many years ahead.”
We were engaged with a real problem, and we were seeking a real solution. If Members would like more on the particulars around article 298, which I have heard the concerns about and committed to write on, we are very happy to provide it, but this is not a new argument about this treaty.
The question I want to ask is about Jonathan Powell, the National Security Adviser who, prior to being National Security Adviser was the Prime Minister’s special envoy to the British Indian Ocean Territories—and still is today. Prior to being appointed on 6 September, he conducted meetings with the FCDO. He confirmed that he had already seen the deal prior to being in post and was then given a hard copy of the deal when he reached Port Louis. When did he attend Port Louis? Was it prior to his appointment as the PM’s special envoy? What security clearance did he have when he saw the Chagos deal for the first time?
The Minister will forgive me for being a bit obtuse, but it was my understanding that the leasing of the base at massive cost to the working person in this country was to secure national interests and safety. I therefore cannot grasp why the Government are possibly working against our greatest ally in the US of A and sending an internationally resounding message that our base cannot be used if it is deemed necessary. Will the Minister please outline what discussions have been held in the past number of days to correct any belief that we do not stand fully with our American allies?
The key question, which refers to the previous point of order, is about the fact that last May the Secretary of State for Defence said that Diego Garcia would be weeks away from a legal ruling unless the treaty was agreed to. Opposition Members are concerned that that is not correct and that he may have inadvertently misled the House, because article 298 of UNCLOS provides an opt-out for binding rulings in relation to “military activities”. Surely we should have a Minister in front of us who can answer our fundamental legal questions on the treaty.
As it happens, the Minister responsible for the Bill is travelling back to the UK today. I am sure he would have been more than delighted to answer the urgent question but was not in a position to do so. I want to ensure that the House gets precise answers.
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