David Shulkin, former U.S. Secretary of Veterans Affairs and author of "It Shouldn't Be This Hard to Serve Your Country," sits down with Christiane Amanpour to give insight into the ongoing impeachment inquiry. He weighs in as Army Lieutenant Colonel Alexander Vindman testifies behind closed doors about Trump's Ukraine phone call. Mona Fawaz, professor at the American University of Beirut, talks about what sparked the ongoing mass protests in Lebanon that caused the Prime Minister to resign. Juan Manuel Santos, the former Colombian President, discusses the connections and motivations behind the protests in Lebanon, Hong Kong, Chile and Colombia. He explains how it is inequality and polarization that is forcing people out onto the streets around the world. Our Hari Sreenivasan sits down with John Lithgow, multi-award-winning actor, to reflect on playing Fox News chairman Roger Ailes in new film "Bombshell" and turning his hand to satirical poetry in his new book "Dumpty: The Age of Trump in Verse."To learn more about how CNN protects listener privacy, visit cnn.com/privacy