'President Donald Trump's former National Security Adviser John Bolton is being investigated for possibly disclosing classified information when he published his memoir in June.
The US Department of Justice launched a criminal case after failing to stop the publication of The Room Where It Happened book.
Mr Bolton denies all the accusations.
In the book, Mr Trump is depicted as a president ignorant of geopolitical facts.
Mr Bolton, who served as MrTrump's national security adviser in 2018-19, also alleges the president's decisions are driven by a desire for re-election
At the time of publication, President Trump made it clear that he wanted his former aide prosecuted, describing him as "grossly incompetent" and "a liar".'