Raúl Castro Steps Down, Leaving Cuba's Future Uncertain

In this March 17, 2015 file photo, Cuba's President Raul Castro listens to the playing of national anthems during his welcome ceremony at the Miraflores presidential palace in Caracas, Venezuela.
( Ariana Cubillos / AP Photo )
( Ariana Cubillos / AP Photo )
Produced by Rob Gunther
Hosted by Todd Zwillich