On Tuesday, U.S. President Barack Obama and Cuban President Raul Castro made history. The two dignitaries exchanged pleasantries, joined the packed stadium for a moment of silence for the victims in Tuesday’s tragic terrorist attack in Belgium, and took in a ballgame between the Tampa Bay Rays and the Cuban National Team at iconic Estadio Latinoamericano, Havana’s most famous stadium, as the world watched. No sitting U.S. president has visited Cuba since Calvin Coolidge 88 years ago, and the significance of this moment was lost on no one.