Former national security advisor John Bolton has recently made headlines over the purported contents of his new “tell-all” book, where he claims President Donald Trump threatened to pull Ukrainian aid if they didn’t investigate Hunter Biden.

However, should the senate approve witnesses and Bolton appear at the impeachment trial to testify, America may not get the full story. During a 2010 Fox News interview with Judge Napolitano, Bolton said he would lie under oath to protect national security measures.

“Is it an attack on the United States for us to know that our ally, Saudi Arabia, is actually financing Al Qaeda?” Napolitano asked. “Isn’t that something we would want to know?”

“I want to make the case for secrecy in government when it comes to the conduct of national security affairs and possibly for deception where it’s appropriate,” Bolton stated, adding a quote from Winston Churchill that “truth is so important it should be surrounded by a bodyguard of lies.”

“Do you really believe that?” Napolitano replied. “You would lie in order to preserve the truth?”

“Absolutely,” Bolton said. “If I had to say something I knew was false to protect American national security, I would do it.”

“Why do people in the government think that the rules of civil society or the laws don’t apply to them?” the Fox News host countered.

“Because they are not dealing in the civil society we live in under the Constitution,” Bolton answered. “They are dealing in an anarchic environment internationally where different rules apply.”

“But you took an oath to uphold the Constitution, and the Constitution mandates certain openness and certain fairness,” Napolitano countered again. “You’re willing to do away with that in order to achieve a temporary military goal?”

“The Constitution is not a suicide pact,” Bolton said.

Here’s the video:

Bolton may be headed for legal trouble regarding his book, however. A member of the National Security Council contacted Bolton’s attorney and said that they would be stepping in to block his book, as it contains “significant amounts of classified information.”

“Under federal law and the nondisclosure agreements your client signed as a condition for gaining access to classified information, the manuscript may not be published or otherwise disclosed without the deletion of this classified information,” Ellen J. Knight, NSC senior director for records, access, and information security management wrote in a letter to Bolton’s lawyer.