Conflict is raging in more than 30 countries around the world, according to the Institute for Economics and Peace. Each conflict is creating a dire humanitarian situation for innocent civilians, but many aid organizations now call Sudan the world's worst humanitarian crisis. Volker Türk is the UN's High Commissioner for Human Rights. He just visited Sudan and joined the show to tell us what he saw there. 

Also on today's show: Director/writer Kleber Mendonça Filho and actor Wagner Moura, "The Secret Agent"; Jodi Kantor, Investigative Reporter, The New York Times