Donald Trump has urged Sir Keir Starmer not to hand over the Chagos Islands to Mauritius, a day after the US said it approved of the deal.In a post on his Truth Social platform, the US president said Sir Keir would be making "a big mistake" if he proceeded with plans to hand over the islands, which are home to a joint US-UK military base.

Donald Trump has urged Sir Keir Starmer not to hand over the Chagos Islands to Mauritius, a day after the US said it approved of the deal.In a post on his Truth Social platform, the US president said Sir Keir would be making "a big mistake" if he proceeded with plans to hand over the islands, which are home to a joint US-UK military base.