Donald Trump has said he will sue the BBC for between $1bn and $5bn over the editing of his speech on Panorama.
The US president confirmed he would be taking legal action against the broadcaster while on Air Force One overnight on Saturday.
"We'll sue them. We'll sue them for anywhere between a billion (£792m) and five billion dollars (£3.79bn), probably sometime next week," he told reporters.
"We have to do it, they've even admitted that they cheated. Not that they couldn't have not done that. They cheated. They changed the words coming out of my mouth."
Mr Trump then told reporters he would discuss the matter with Prime Minister Sir Keir Starmer over the weekend, and claimed "the people of the UK are very angry about what happened... because it shows the BBC is fake news".
Separately, Mr Trump told GB News: "I'm not looking to get into lawsuits, but I think I have an obligation to do it.
"This was so egregious. If you don't do it, you don't stop it from happening again with other people."
The Daily Telegraph reported earlier this month that an internal memo raised concerns about the BBC's editing of a speech made by Mr Trump on 6 January 2021, just before a mob rioted at the US Capitol building, on the news programme.
The concerns regard clips spliced together from sections of the president's speech to make it appear he told supporters he was going to walk to the US Capitol with them to "fight like hell" in the documentary Trump: A Second Chance?, which was broadcast by the BBC the week before last year's US election.
Following a backlash, both BBC director-general Tim Davie and BBC News chief executive Deborah Turness resigned from their roles.
'No basis for defamation claim'
On Thursday, the broadcaster officially apologised to the president and added that it was an "error of judgement" and the programme will "not be broadcast again in this form on any BBC platforms".
A spokesperson said that "the BBC sincerely regrets the manner in which the video clip was edited," but they also added that "we strongly disagree there is a basis for a defamation claim".
Earlier this week, Mr Trump's lawyers threatened to sue the BBC for $1bn unless it apologised, retracted the clip, and compensated him.
Legal challenges
But legal experts have said that Mr Trump would face challenges taking the case to court in the UK or the US.
The deadline to bring the case to UK courts, where defamation damages rarely exceed £100,000 ($132,000), has already expired because the documentary aired in October 2024, which is more than one year.
Also because the documentary was not shown in the US, it would be hard to show that Americans thought less of the president because of a programme they could not watch.
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Newsnight allegations
The BBC has said it was looking into fresh allegations, published in The Telegraph, that its Newsnight show also selectively edited footage of the same speech in a report broadcast in June 2022.
A BBC spokesperson said: "The BBC holds itself to the highest editorial standards. This matter has been brought to our attention and we are now looking into it."
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