Pompeo, who was the director of the Central Intelligence Agency before becoming the Secretary of State, recounted in the book his four years in former President Donald Trump's cabinet.
From just three speeches given in November, the former prime minister made more than 750,000 pounds, according to an update to the MPs' register of interests.
In an email sent to the Twitter employees, CEO Musk said the company will seek "immediately seek damages" if they violate their non-disclosure agreements (NDAs).
After his meeting with Apple CEO Tim Cook, Musk said that they had "resolved" misunderstandings over the micro-blogging platform possibly being removed from the App Store.
Earlier this month, Twitter had told advertisers that its daily user growth has hit an "all-time high" after Musk's takeover even as several advertisers left the platform amid internal chaos.
Musk, in his memo to employees, had written that 'going forward, to build a breakthrough Twitter 2.0 and succeed in an increasingly competitive world, we will need to be extremely hardcore'.
The evictions are a measure to keep Qatar's glitzy and wealthy facade in place without publicly acknowledging the cheap labour that makes it possible, say rights activists.