Michael McFaul, who served as the U.S. Ambassador to Russia from 2012 to 2014 under the Obama administration, shares in a wide-ranging conversation his view on Russia’s interference in the 2016 presidential election as well as his fears about a new arms race, and what it has meant for him to be banned from returning to Russia. McFaul is the author of "From Cold War to Hot Peace: An American Ambassador In Putin's Russia."