Twitter fires back at Musk

Twitter’s stock saw its biggest daily percentage drop in more than 14 months on Monday, wiping out more than $3bn in valuation.

Twitter Inc has fired back at Elon Musk, accusing the world’s richest person of “knowingly” breaching an agreement to buy the social media firm, days after the Tesla Inc chief sought to back out of the $44bn deal.

In a letter sent to Musk dated Sunday and filed with regulators on Monday, Twitter said it had not breached its obligations under the merger…