Singling out the UK, the US president rebuked Sir Keir Starmer for refusing to get involved in the American-Israeli war against Iran, suggesting that the Royal Navy was not up for the task.

“You don’t even have a navy. You’re too old and had aircraft carriers that didn’t work,” he said, referring to the state of Britain’s fleet of warships.

Asked whether the Prime Minister should spend more on defence, Mr Trump added: “I’m not going to tell him what to do. He can do whatever he wants. It doesn’t matter. All Starmer wants is costly windmills that are driving your energy prices through the roof.”