How exposing ‘the horror of war’ motivated Marie Colvin

For its annual “Person of the Year" feature, Time magazine recognized reporters targeted for their work in the field. Author Lindsey Hilsum tells the story of one such journalist, her friend Marie Colvin, who was murdered while covering the war in Syria. Hilsum sits down with Nick Schifrin to discuss her new biography, “In Extremis: The Life and Death of the War Correspondent Marie Colvin.”