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,

The governments of Britain and Mauritius have signed a deal settling the future of the Chagos Islands after overcoming last-minute legal hurdles