The United States and Cuba - which eked out its 60th year of revolution in January - have brokered respectable changes in the recent past. President Obama rewrote Cold War policy that governed the decades-long stalemate. Embassies reopened, air travel recommenced and an economic-development vision was put in place. Obama even traveled to Havana to meet with Raúl Castro. Something new was afoot.Or so it seemed. Critically, the rapprochement did not abrogate the U.S.