Donald Trump has told The Telegraph he is strongly considering pulling the United States out of Nato after it failed to join his war on Iran. The US president labelled the alliance a "paper tiger" as he said removing America from the defence treaty was now "beyond reconsideration".
It is the strongest sign yet that the White House no longer regards Europe as a reliable defence partner following the rejection of Mr Trump's demand that allies send warships to reopen the Strait of Hormuz.
Mr Trump was asked if he would reconsider the US's membership of the alliance after the conflict. "Oh yes, I would say [it's] beyond reconsideration," he replied. "I was never swayed by Nato. I always knew they were a paper tiger, and Putin knows that too, by the way."
Nato partners have been reluctant to help reopen the strait, through which 20 per cent of the world's oil typically travels. Tehran has effectively closed the strait for weeks, sending global oil and gas prices spiralling while threatening a global recession.
Mr Trump added: "Beyond not being there, it was actually hard to believe. And I didn't do a big sale. I just said, 'Hey', you know, I didn't insist too much. I just think it should be automatic.
"We've been there automatically, including Ukraine. Ukraine wasn't our problem. It was a test, and we were there for them, and we would always have been there for them. They weren't there for us."
Singling out the UK, the US president rebuked Sir Keir Starmer for refusing to get involved in the American-Israeli war against Iran, suggesting 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.
Speaking on Fox News in the hours before the interview with Mr Trump, Mr Rubio said America would have to "re-examine" its Nato membership when the war in Iran came to an end. "I think there's no doubt, unfortunately, after this conflict is concluded, we are going to have to re-examine that relationship."
"If Nato is just about us defending Europe if they're attacked, but them denying us basing rights when we need them, that's not a very good arrangement. That's a hard one to stay engaged in."
Mr Trump told The Telegraph he was "glad" Mr Rubio made the comments.