On this episode of Stay Tuned, "Duty to Impeach & Realpolitik, host Preet Bharara answers your questions about: -- The difference between evidence and proof -- Reports that Special Counsel Bob Mueller’s team does not want him to publicly testify -- Whether Congress has the duty to impeach—not just the power -- Pardons, commutations, and exonerations -- Why Preet shaved his beard David Ignatius, Pulitzer Prize-winning journalist and columnist for the Washington Post, joins Preet for a conversation about the prospects of war with Iran, the significance of a President’s relationship with his national security adviser, and whether there is a Trump Doctrine of foreign policy. Bonus clips from the interview are available for members of the CAFE Insider community Sign up to receive free references and supplemental materials for Stay Tuned episodes, a weekly newsletter, and updates from Preet. As always, tweet your questions to @PreetBharara with hashtag #askpreet, email us at staytuned@cafe.com, or call 699-247-7338 to leave a voicemail. See omnystudio.com/listener for privacy information. Learn more about your ad choices. Visit podcastchoices.com/adchoices