Castro listens to an interpreter as he and Obama talk to reporters before meeting during the Summit of the Americas in Panama City, Panama

Cuba’s President Raul Castro listens to an interpreter as he and U.S. President Barack Obama talk to reporters before meeting during the Summit of the Americas in Panama City, Panama April 11, 2015. Neither president took questions from the press. Obama and Castro shook hands on Friday at the summit, a symbolically charged gesture as the pair seek to restore ties between the Cold War foes. REUTERS/Jonathan Ernst