US govt sues Edward Snowden over new book, seeks all its earnings

The US government has filed a lawsuit against whistleblower Edward Snowden over the publication of his book 'Permanent Record' and sought all proceeds earned from it. The government alleged Snowden published the book in violation of non-disclosure agreements he signed with the CIA and NSA. The lawsuit further alleged Snowden didn't submit the book to the agencies for pre-publication review.