Peter Bergen on 'Trump and His Generals'

You probably know Peter Bergen from his work at CNN, his books on terrorism and national security, or perhaps his role as vice president at New America. Now, he's turned his reporting and analysis to President Trump, to President Trump's advisors, and to the impact of those relationships on U.S. national security. David Priess sat down with Peter to talk about his new book: "Trump and His Generals," the president's confusing mix of attraction to senior military leaders and disdain for their advice, and what it all means for foreign policy in Washington.