The Trump-Bannon rift and what we're learning about the Russia investigations

In an upcoming book, former White House chief strategist Steve Bannon is quoted as saying a 2016 meeting with Donald Trump Jr., other campaign staffers and a group of Russians was “treasonous” and “unpatriotic.” Mark Mazzetti, Washington investigations editor at The New York Times, and Robert Costa, host of Washington Week and a Washington Post reporter, talk with Hari Sreenivasan about the latest revelations in the Russia investigation and so-called Steele dossier.