With the United States’ attention fixed on Iran, Venezuela and other crises, the Trump administration’s increasing pressure campaign against Cuba has largely unfolded in the background. That may be why it has drawn less attention than other major foreign policy efforts. But the pieces add up to something larger than routine sanctions policy. In January, President Trump declared Cuba an “unusual and extraordinary threat” to U.S. national security and foreign policy, accusing Havana of hosting adversary intelligence capabilities, aligning with Russia, China, Iran, Hamas and Hezbollah, supporting terrorism, destabilizing the hemisphere through migration and violence, and spreading communism throughout the region. Since then, the administration has tightened sanctions, disrupted shipping, amplified warnings about drones and connections to Iran, expanded the U.S. naval presence in the region and recently indicted former Cuban president Raúl Castro. Trump sent CIA Director John Ratcliffe to Havana to warn Cuban officials against hostilities while urging political change as a path to relief from U.S. sanctions. This all looks less like a response to a sudden crisis than the construction of …