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Lord Callanan (Con)

Speaking in the House of Lords on 25 November 2025

Debate

Diego Garcia Military Base and British Indian Ocean Territory Bill

Contribution

My Lords, the amendments in this group speak to perhaps one of the most concerning parts of the treaty—although the previous bit was also concerning: namely, the risk that this agreement will undermine our security. Given the large number of amendments in this group, I will speak only to those in my name. I know that my noble friend Lady Goldie will speak to her amendments as well, and I will certainly not seek to pre-empt her arguments in my remarks, as my noble friend is much more of an expert on defence matters than I will ever be. My Amendment 18 is a commencement block that would prevent the main clauses of the Bill coming into effect until the Government have laid a report on securing a guarantee that all non-UK and non-US civilian personnel stationed on the archipelago will benefit from the provisions of Annex 1. Annex 1 protects the UK’s unrestricted access to Diego Garcia’s sea and airspace. The treaty makes reference to some civilian activity, but we are seeking an assurance from the Government that that part of the treaty in its entirety applies to civilians stationed on Diego Garcia. I hope the Minister will be able to give us that assurance. Amendment 67 speaks to one of the most fundamental questions, which has already been the subject of much debate. The treaty is clear that the UK must inform Mauritius of any armed attack on a third state directly emanating from the base on Diego Garcia, using the magnificent word, “expeditiously”. The dictionary definition of expeditiously is “quickly and efficiently” and “with speed”. Many have rightly asked what expeditiously means in practice. My Amendment 67 clarifies that the UK Government must not inform Mauritius of any relevant armed attacks until the attack has ended. Providing prior notification to Mauritius, or indeed any third state not directly involved in the attack, could risk the safety of British and American servicemen who are engaged in the relevant operation. Could the Minister confirm that nothing in the treaty requires the UK Government to give forewarning of any attack emanating from the military base? If that is the case then I am sure they can accept the amendment. Additionally, my amendment seeks a requirement not to notify Mauritius if notification would endanger the security of the base. Can the Minister confirm that nothing in the treaty would prevent the Government withholding notification if notifying Mauritius would endanger the base? My noble friend Lady Goldie will be going into additional details on these important issues. Amendment 69 in my name seeks to make a point about the location of specific equipment and installations on the base. It is essential that the security of the base is maintained. It would not be acceptable if the UK Government were to endanger the security of equipment at the military base by notifying Mauritius. In replying to the debate, can the Minister please address those concerns? It is essential that the UK Government have the right to refuse notification when doing so would endanger the base itself or our personnel.

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