https://arstechnica.com/tech-policy/2022/07/twitter-tells-musk-his-purported-termination-of-merger-deal-is-invalid/

Twitter told Elon Musk in a letter that his "purported termination" of their merger deal "is invalid and wrongful," and that his commitment to fund the purchase remains in effect.

The letter, sent to Musk's lawyers on Sunday and made public Monday in a regulatory filing, is a prelude to the lawsuit that Twitter intends to file against Musk this week. The letter said: