The president previously supported Britain's agreement to hand back sovereignty of the Indian Ocean archipelago, where the U.K. continues to lease the U.S.-U.K. Diego Garcia military base.

EXCLUSIVE: Keir Starmer has decided to hand the Chagos Islands to Mauritius - but a new legal challenge says they might not be his to give to anyone.

The US has awarded a joint UK-US company a multi-year contract to support operations at Diego Garcia, a key regional military base.