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Diego Garcia: Military Bases

Asked by James CartlidgeConservativeMinistry of DefenceTabled Answered 4 March 2026UIN 116543

The question

To ask the Secretary of State for Defence, with reference to his statement of 22 May 2025 on Diego Garcia Military Base, Official Report, column 1284, if he will list the legal threats that currently threaten the security of the Diego Garcia military base.

Answered by Luke Pollard

We have always been clear that, if a long-term deal was not reached, there was a risk of further litigation being brought rapidly which could have had serious implications for the operation of the military base on Diego Garcia.

There are various avenues through which Mauritius could pursue a legally binding ruling, including under dispute provisions of treaties to which both States are parties or further arbitral proceedings against the UK under Annex VII of the UN Convention on the Law of the Sea ("UNCLOS"). A ruling from such an arbitral tribunal would be legally binding on the parties to it.

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