Former national security adviser John Bolton says he is 'prepared to testify' in Trump's impeachment trial

"I have concluded that, if the Senate issues a subpoena for my testimony, I am prepared to testify," Bolton said in a statement.

Former national security adviser John Bolton says he is 'prepared to testify' in Trump's impeachment trial

Former national security adviser John Bolton says he is 'prepared to testify' in Trump's impeachment trial"I have concluded that, if the Senate issues a subpoena for my testimony, I am prepared to testify," Bolton said in a statement.