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The Minister of State, Ministry of Defence (Lord Coaker) (Lab)

Speaking in the House of Lords on 3 June 2025

Debate

Diego Garcia Military Base

Contribution

My Lords, I thank the noble Earl, Lord Minto, for his comments and the articulate way in which he presented an opinion that I do not agree with. But that is the point of scrutiny and that is the point I am making back to the noble Earl. Whatever the process is, that he could stand here so that we can debate this—and others will debate it—is important to democracy and the way our country works. I also thank the noble Baroness, Lady Smith, for her comments. The Government’s position is quite clear: none of us disagrees that Diego Garcia is of huge significance and importance to the geopolitical security of us and our allies, in particular the United States. The discussion is about the best way of securing that base for the future. The Opposition’s point of view is that there is no legal jeopardy, that we can carry on ignoring the ICJ’s judgment, because it was just advisory, and that we may reach a point when a binding judgment is made. The question then becomes whether we ignore only binding agreements, if we get to them. That was clearly what the previous Government were wrestling with. In answer to the question from the noble Baroness, Lady Smith, it is clearly why, at some point, officials and Ministers under the previous Government—under Rishi Sunak if not before—decided that they needed to negotiate and discuss the future of the Diego Garcia base with Mauritius. Otherwise, what was the point of those negotiations? Were they just a delaying tactic: “We’ll just negotiate and pretend that we’re discussing something when we don’t mean it”. I can see the noble Earl’s noble friend shaking his head, but the consequence of what the noble Earl said is that the previous Government were negotiating with a country with no intention of coming to any agreement. I do not believe that. As much as I do not agree with much of what the last Government did, I do not believe that the lack of integrity in Ministers or officials was such that they would have done that. So I believe that negotiations were going on about the best way forward, and this Government have come to the conclusion that there is judicial or legal jeopardy in allowing the situation to continue. I will try to cut my remarks short to make sure that Back-Benchers get a proper opportunity. We negotiated a treaty, which will be subject to parliamentary scrutiny when it comes before Parliament to be debated. That treaty guarantees, with many conditions, the security of Diego Garcia. Our international partners are far from disagreeing. I will read what Secretary Hegseth said for the noble Baroness—and yes, the US is a really important partner for us on Diego Garcia. Of course it is. We work really closely with the US on this, and we make no apology for that. Pete Hegseth said: “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 in the region”. Secretary Rubio said: “Today, the United States welcomed the historic agreement between the United Kingdom and the Republic of Mauritius on the future of the British Indian Ocean Territory—specifically, the Chagos Archipelago”. Canada said: “Canada welcomes the signing of the Chagos Archipelago sovereignty agreement”. Australia said: “Australia welcomes the signing of the historic agreement between the UK and Mauritius”. I will tell the House what I would do if I were China: I would say what a brilliant agreement it is to sow confusion, upset people and cause people to debate it. I will tell the House what I want: I want this country and our allies to determine what we should do and to tell China that we are going to act in what we consider to be our own interests, irrespective of what it might say to try to disrupt us. New Zealand said: “As a strong supporter of the international rules-based system, New Zealand welcomes the agreement”. India said: “We welcome the signing of the treaty between the United Kingdom and the Republic of Mauritius”. So, far from us being an international pariah because we have signed this agreement, many of the most important countries in that region have welcomed the deal because it confirms the security of that base. We are worried about the law of the sea. The noble Earl asked about that situation. We do not have to share information about actions taken from Diego Garcia in advance of us taking any action. I say that on the record because the noble Earl specifically asked me about it. We do not have to let Mauritius know in advance about it and then potentially share that information. The Government Actuary says that the cost of the treaty arrangements is £3.4 billion over the lifetime of the treaty. If the noble Earl and others want to take issue, let them argue with the Government Actuary, because that is the way that all Governments throughout the past few decades have costed government projects in this sense, so we are not changing that or moving any goalposts. The noble Earl talked about the Chagossians. This was a UK-Mauritius state treaty discussion, but the Chagossian community itself is not united in its response. On 22 May, two prominent Chagossian groups—the Chagos Refugees Group and the Chagossian Committee Seychelles—said that they regretted the legal action that aimed to halt what could be a landmark agreement that serves the long-term interests of Chagossians as a whole. That is Chagossians commenting on this agreement. The argument I put on behalf of the Government is that, far from undermining the base’s sovereignty in terms of its operational independence, and our ability to use Diego Garcia in the way we would all want—to protect our national security and defend our global interests—we have negotiated a treaty that is subject to parliamentary approval, which gives it the scrutiny the noble Earl would like, strengthened it and ensured that we protect our national interests and those of our friends and allies, including the US.

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