I am strongly considering pulling out of Nato

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” and 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 Nato after the conflict.

He replied: “Oh yes, I would say [it’s] beyond reconsideration. 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 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.”

Following his comments, Sir Keir reaffirmed his support for Nato, describing it as “the single most effective military alliance the world has ever seen”.

The Prime Minister signalled that he would seek a closer relationship with Europe in response to the souring of relations with Washington and said that, “whatever the noise”, he would act in the British interest.

He said: “This is not our war, and we’re not going to get dragged into it.”

On Tuesday the First Sea Lord admitted that the Royal Navy is not ready for war, making him the most senior serving military figure to warn of the perilous state of the Armed Forces.

At the start of the conflict in Iran, four of Britain’s six destroyers were out of service and under repair. The UK has been forced to borrow a warship from Germany to fulfil its Nato obligations in the North Atlantic.

The White House has grown increasingly frustrated with long-time partners over their position in the war. Marco Rubio, the secretary of state, accused Nato of being a “one-way street” as he hit out at US allies for not allowing access to their military bases on Tuesday.

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.

The president is set to deliver an “address to the nation” at 9pm EST on Wednesday (2am BST on Thursday) to provide an update on the war.

On Tuesday night, he said it could end within “two weeks, maybe three”, stating that its only goal was to stop Iran from attaining nuclear weapons.

Last week, The Telegraph revealed that Mr Trump was considering a shake-up of Nato designed to punish members who did not meet his funding demands.

British military chiefs have urged the Prime Minister to deliver the promise he made last year to boost defence spending to 3 per cent of GDP by the end of this decade. Rachel Reeves, the Chancellor, is resisting pressure to spend billions more on defence.

Senior members of the Trump administration have pushed for a “pay-to-play model” that could block allies who fail to meet targets from decision-making, including when the bloc goes to war.

Sources close to the president said he was also considering pulling US troops out of Germany – a move that he has considered since returning to office last year.

Mr Trump’s demand for Nato to help in his war with Iran has led to questions about Article 5, the “attack on one is an attack on all” mutual defence clause.

It has only ever been invoked once – after the 9/11 attacks on the US. More than 1,100 non-US troops were killed in the subsequent war in Afghanistan, including 457 British soldiers.

The clause relates only to when a Nato member is attacked and would therefore not apply to the war in Iran, which began with joint US-Israeli air strikes on Feb 28.

Any decision to withdraw the US from Nato would require approval from Congress. In 2023, the country’s legislature adopted a law that prevents the president from “suspending, terminating, denouncing, or withdrawing” the United States from Nato without the consent of the Senate or an act of Congress.

Marco Rubio, who was a US senator at the time, co-sponsored the legislation, arguing that any decision to leave the alliance “should be rigorously debated and considered by the US Congress with the input of the American people”.