Step by step, Cuba is shaking off its status as a Cold War relic and moving towards mundane normality. The Obama administration has established normal diplomatic relations with the Castros – both America and Cuba now possess fully fledged embassies in their respective capitals – and Pope Francis is due to visit Havana next month.For now, the United States embargo remains in place, serving as hostage to Washington politics. But no one doubts that this hangover from the old days is on its way out. When the embargo finally goes and the octogenarian Castro brothers disappear from the scene, it requires no great power of foresight to predict what will happen next.Flooded with American tourists and investment, Cuba will become a normal Caribbean island. The country will doubtless pr