Elon Musk, the chief executive officer of Tesla and the world's richest person, has terminated his $44 billion deal to buy Twitter. Musk claims the decision was made because the social media company had failed to provide information about fake accounts. In response, Twitter's chairman, Bret Taylo said that the board planned to pursue legal action to enforce the merger agreement. The two sides have had ugly spat over spam account data for months since Musk announced the purchase in April. While Twitter has maintained that no more than 5% of accounts are run by software instead of people, Musk says he believes the number to be much higher. Watch this report for more details.