Bernard-Henri Lévy on the Potential Resurgence of ISIS

French philosopher and writer Bernard-Henri Lévy has gone to the front lines of the fight against ISIS alongside Kurdish fighters. In two documentaries, Peshmerga and The Battle of Mosul, he tells the story of a people repeatedly abandoned by the West, who continue to fight for shared causes and values. Lévy tells Hari about his projects and explains how he has evidence ISIS is regrouping.