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## Overview The United Kingdom has reportedly put its proposed agreement to give Mauritius formal sovereignty over the Chagos Islands on hold, following criticism from President Donald Trump, who called the deal 'an act of great stupidity' (New York Times, April 11). The islands host the Diego Garcia military base, a jointly operated US-UK strategic installation critical to Indo-Pacific and Middle East operations. *Note: An existing page covers the initial pause (UK-Mauritius Chagos Islands Agreement – Trump Intervention & Pause (2026)). This entry tracks ongoing developments.* ## Latest Developments (April 2026) - The UK has put the deal on hold as of approximately April 11, 2026, following sustained Trump administration pressure (New York Times, April 11) - Trump's characterization of the deal as 'an act of great stupidity' reflects broader US concern about ceding control of the Diego Garcia base, which has been used in US military operations including during the US-Iran war - No revised timeline for negotiations has been publicly announced ## Strategic Stakes ### Diego Garcia Military Base - Diego Garcia is one of the most strategically located military installations globally, enabling power projection across the Indian Ocean, Persian Gulf, and Western Pacific - US B-2 bombers and naval assets have reportedly operated from Diego Garcia during the US-Iran war - Any sovereignty transfer that affects US basing rights would require Congressional notification and potentially Senate treaty ratification ### UK-US Relations - The episode illustrates the limits of UK independent foreign policy where US basing interests are involved - The UK faces competing pressures: international legal obligations following the International Court of Justice advisory opinion on Chagos (2019), and alliance management with Washington ### Mauritius & International Law - Mauritius claims the Chagos Islands as part of its sovereign territory, supported by successive UN General Assembly resolutions and the ICJ advisory opinion - A prolonged hold on the deal leaves Mauritius in legal and diplomatic limbo and may increase its outreach to China and other powers ## Outlook The deal is paused but not dead. Resolution will likely require either a change in US posture or a renegotiated agreement that more explicitly preserves US military access rights. The issue will recur as international legal pressure on the UK mounts and as Mauritius continues to press its claim.