Elon Musk says he's pulling out of his $44 billion (€43.2 billon) deal to buy Twitter, arguing that "multiple provisions" of the agreement have been breached.

Video. Twitter to sue Elon Musk for calling off his takeover bid

The world's richest man wants to walk away from the $44 billion (€43.2 billion) deal, but Twitter's board says it will fight in court.

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