Cole Bunzel; Joseph A. Califano, Jr.; Lynsey Addario

Cole Bunzel, Princeton doctoral student and one of the world's leading experts on ISIS, discusses the Islamic State, Jordan, the UAE, and the state of affairs in the Middle East. Joseph A. Califano, Jr. reflects on his time with Lyndon Johnson and his reissued 1991 book about the experience, "The Triumph & Tragedy of Lyndon Johnson: The White House Years." Lynsey Addario, who has photographed in conflict zones, and who's been kidnapped in the process, discusses her memoir, "It's What I Do: A Photographer's Life of Love and War."