The rift between US President Donald Trump and his former adviser Elon Musk has erupted into the open, with each trading insults after the tech billionaire criticised one of Trump's key domestic policies.
The two billionaires escalated the feud throughout Thursday, lobbing barbs at each other on the social media sites they each own, suggesting a bitter conclusion to their unlikely alliance.
The day began with Trump saying he was "disappointed" with Musk's criticisms of his administration's centrepiece tax and spending bill, musing that it may be the end of their "great relationship".
Musk then accused Trump of "ingratitude", adding: "Without me, Trump would have lost the election".
After hours of sparring, Trump appeared to downplay the situation. "Oh it's okay," he told news site Politico. "It's going very well, never done better." His aides have scheduled a phone call with Musk for Friday, the same news site reported.
Musk also appeared to believe there was a need to patch things up. Late on Thursday, in response to post by Bill Ackman, a prominent Trump backer, which suggested the pair needed to make peace, he wrote: "You're not wrong"
The breaking point in the relationship between the president and his one-time ally came after weeks of Musk lobbying against Trump's "big, beautiful" spending bill, which was passed by the US House last month and is awaiting a vote in the Senate.
Shortly after leaving the Department of Government Efficiency (Doge) after 129 days in the job, Musk took to his site X to call the bill a "disgusting abomination" and posting: "Shame on those who voted for it: you know you did wrong."
He argued that the bill will irresponsibly add to the US national debt, and encouraged his followers to phone their representatives to express opposition to the spending plan.
Speaking to reporters during a news conference with German Chancellor Friedrich Merz on Thursday, Trump defending the bill and said: "I'm very disappointed because Elon knew the inner workings of this bill better than almost anybody sitting here. All of a sudden he had a problem."
He went on to suggest that Musk was upset about the removal of subsidies and mandates for electric vehicles, which could affect his Tesla business.
Musk denied this was the case and wrote: "Keep the EV\/solar incentive cuts in the bill, even though no oil & gas subsidies are touched (very unfair!!), but ditch the MOUNTAIN of DISGUSTING PORK in the bill."
"Pork" is a term used in US politics to describe wasteful government spending, particularly on things meant to curry favour with particular groups or local areas.<\/p>\n
The partnership between the two men began when Musk endorsed Trump last July after an assassination attempt in Pennsylvania. The Tesla boss reportedly funnelled $290m (\u00a3213m) into getting him back into the White House.
Amid a flurry of posts on X after Thursday's news conference, Musk took credit for the sweeping Republican victory in last November's election, writing: "Without me, Trump would have lost the election, Dems would control the House and the Republicans would be 51-49 in the Senate."
"Such ingratitude," he added.
Musk went on to post a poll, asking his followers: "Is it time to create a new political party in America that actually represents the 80% in the middle?"
Over the course of the day, Musk went on to repost a tweet calling for Trump to resign, argue that his global tariff plan will trigger a US recession, and to suggest without evidence that Trump appears in unreleased files related to late sex offender Jeffrey Epstein.
Epstein was arrested in July 2019 on charges of sex trafficking and died by suicide while awaiting trial. Trump was president at the time. He said he knew Epstein "like everybody in Palm Beach knew him" but had a "falling out with him a long time ago".
The White House condemned Musk's allegation, with press secretary Karoline Leavitt saying in a statement: "This is an unfortunate episode from Elon, who is unhappy with the One Big Beautiful Bill because it does not include the policies he wanted."
On his Truth Social network, Trump claimed that Musk "just went CRAZY" and went on to post: "The easiest way to save money in our Budget, Billions and Billions of Dollars, is to terminate Elon's Governmental Subsidies and Contracts. I was always surprised that Biden didn't do it!"
Musk's companies, including Tesla, SpaceX and Starlink have direct contacts with the US government and, like many other businesses, also benefit from subsidies and tax breaks.
In response, Musk said SpaceX "will begin decommissioning its Dragon spacecraft <\/a>immediately". The craft is used to shuttle people and supplies to the International Space Station.
However, he later he appeared to back down from that threat, saying in response to a post on X urging him to cool off: "Ok, we won't decommission Dragon."
Telsa stock dropped by 14% within hours of the row bursting out into public.
According to the most recent analysis from the nonpartisan Congressional Budget Office, the spending bill working its way through Congress will increase the US national debt by $2.4tn over 10 years and leave nearly 11 million people without government-backed health insurance.
The White House disputes those figures, saying they don't account for revenues brought in by increased tariffs.
Put in charge of radically slashing government spending at Doge, Musk initiated mass sackings and wholesale elimination of departments such as the US Agency for International Development (USAID).
Doge claims to have saved $180bn, although that number has been disputed, and is well short of Musk's initial aim to cut spending by up to $2tn.
Follow the twists and turns of Trump's second term with North America correspondent Anthony Zurcher's weekly US Politics Unspun<\/a> newsletter. Readers in the UK can sign up here<\/a>. Those outside the UK can sign up here<\/a>.
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