“I forgot to go over one thing,” I said. “Raúl Castro is going to be up there on the dais with you.” “So?” he asked. “So the question is, what do you do if you see him?” Some press had started asking about this—no U.S. president had greeted a Cuban president since the revolution. Their interaction would be a matter of intense scrutiny. “I’ll shake his hand, of course,” Obama replied. “The Cubans were on the right side of apartheid. We were on the wrong side.”

