AdvertisementFree To Speak, Ex-CIA Chief John Brennan Takes On Trump08:16Download AudioResumeApril 26, 2018Greg MyreMary Louise KellyfacebookEmailSince stepping down as CIA chief last year, John Brennan has been a harsh critic of President Trump. "I just think he hasn't fulfilled the responsibilities of the president of the United States," Brennan tells NPR. (NPR)