LONDON — President Donald Trump threatened to sue the BBC for $1 billion, his legal team told NBC News on Monday, accusing the British public broadcaster of trying to "interfere in the presidential election" last year by editing one of his speeches .

Trump was already performing a victory lap after the BBC's top official, Director General Tim Davie, and news CEO Deborah Turness resigned Sunday over mounting pressure on the 103-year-old organization.

In doing so, the president has become a key voice on the future of this national institution, which has come under sustained attack from the political right .

The BBC's chairman, Samir Shah, apologized Monday for what he called an "error of judgement." A day before the election last year, BBC's "Panorama" had spliced together two secti

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