Question to the Ministry of Defence:

To ask the Secretary of State for Defence, with reference to Annex 1, Clause 2, of the UK/Mauritius: Agreement concerning the Chagos Archipelago including Diego Garcia [CS Mauritius No.1/2025], what level of detail is required to be passed onto Mauritius in relation to an armed attack.

As the hon. Gentleman will recall from his time as a Defence Minister, it is standard practice for basing arrangements to include an agreement to inform a host nation about military action from their territory. Additionally, the UN Charter has a requirement to notify the UN of military action taken in self-defence. Any notification to Mauritius will take place after the event and will not require the UK to divulge sensitive information. The United Kingdom will inform Mauritius through normal diplomatic channels.