The UK has signed a £3.4bn ($4.6bn) deal to hand over sovereignty of the Chagos Islands to Mauritius, while retaining control of a UK-US military base on Diego Garcia - the largest of the islands. Prime Minister Sir Keir Starmer says the 99-year agreement to lease back Diego Garcia will cost the UK £101m a year,

The Chagos Islands are a strategically significant area, with one of its islands, Diego Garcia, serving as a key military base jointly operated by the UK and the US. It monitors the Malacca Strait and other essential global trade routes,

A ceremony transferring sovereignty of the British Indian Ocean Territory of the Chagos Islands to Mauritius was called off at the last moment after the High Court in London granted an injunction to islanders.