John Bolton, former National Security Adviser to US President Donald Trump, expressed concern about the possibility of the White House blocking his book, which has not yet been published, indicating that he should be able to respond to the tweets the president publishes about him.
"I hope it does not stop ... It is an attempt to write history, and I did it as best I could ... We have to see what will come out of censorship," Bolton said on Monday in a speech at a university in North Carolina.
"I say things in the notes about what he said to me," he said, referring to Trump. When asked about his president's criticism on Twitter, he said, "He (Trump) is posting tweets, but I can't talk about it ... Is this fair?"
He said he could not answer any question about North Korea, because those matters included in the notes that are currently under government review before publication.
The Trump administration has already caused concern about those notes, saying it discloses classified information.
These are Bolton's first public statements since Trump was acquitted during a Senate questioning.
Bolton, 71, left office last September following disagreements with the US president. Trump says he dismissed him, while Bolton says he has resigned.
Bolton told the White House in January that his draft appeared to contain "a large amount of classified information" and could not be published in its current form.