-snip- What to do now? How about this: Treat it as an opportunity. Use the change of facts to announce a change of course. Declare the old way over. Declare a new U.S.-Cuban relationship, blow open the doors of commerce and human interaction, allow American investment and tourism, mix it up, reach out one by one and person by person to the people of Cuba. "Flood the zone." Flood it with incipient prosperity and the insinuation of democratic values. Let Castroism drown in it. The American economic embargo of Cuba is 40 years old. It has been called ineffective--it did...