US President Donald Trump has said he will sue the BBC for up to $US5 billion ($7.65 billion) despite the broadcaster apologising for airing an edited clip of one of his speeches, leading to the resignation of top executives.

"We'll sue them for anywhere between a billion and five billion dollars, probably some time next week. I think I have to do it. They've even admitted that they cheated," Mr Trump told reporters aboard Air Force One on Friday.

The dispute started after the BBC released a documentary titled "Trump: A Second Chance?" days before the 2024 US presidential election.

The documentary included a spliced version of a speech delivered by Mr Trump on January 6, 2021.

The edited speech combined quotes delivered almost an hour apart, cutting sections where Mr Trump encouraged s

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