US President Donald Trump said his former national security adviser, John Bolton, will break the law if he publishes a book, Reuters reported.

“I will consider every conversation with me as president highly classified. So that would mean that if he wrote a book and if the book gets out, he’s broken the law,” Trump said. 

“That’s called criminal liability. That’s a big thing,” Trump added. 

'The Room Where It Happened: A White House Memoir,' is set to be published on June 23. 

The US Department of Justice filed a lawsuit on Wednesday to suspend the publication of the book.

The Justice Department requires Simon & Schuster to delay the publication of the book until Bolton approves it with the administration for any secret information. 

Shortly after the information about the lawsuit appeared in leading US media, excerpts from the book have been revealed, which contained unpleasant characteristics of Trump and criticism of his actions.