Obama in Asia; Andrew McAfee; Dr. Anthony Fauci

Guest hosts Al Hunt and Ian Bremmer discuss President Obama's visit to Hiroshima with Will Ripley of CNN, Patrick Cronin of the Asia-Pacific Security Program, and Jennifer Harris of the Council of Foreign Relations. Andrew McAfee introduces his book, "The Second Machine Age." Dr. Anthony Fauci discusses the possibility of a Zika outbreak this summer.