“We are aware of reports that grand jury subpoenas have been issued seeking information concerning the publication of Ambassador Bolton‘s recent book," Cooper said in a statement. "Ambassador Bolton emphatically rejects any claim that he acted improperly, let alone criminally, in connection with the publication of his book, and he will cooperate fully, as he has throughout, with any official inquiry into his conduct.”
The Trump administration has maintained for months that Bolton's book, which offers a behind-the-scene account of Trump's interactions with foreign leaders, contains classified information that could jeopardize national security. Bolton legal team has said he spent months addressing White House concerns about classified material and said he was assured in April by the official with whom he had been working that the manuscript was free of such information. It was only later, Bolton's lawyers say, that other White House officials told him the book still included classified government secrets.