LONDON – Live or die, the Cubans of Miami seem to have put the champagne on ice. Just to be reminded of Fidel’s mortality is apparently enough. Nearly all are convinced that the erstwhile guerrilla of the Sierra Maestra, scourge of John F. Kennedy, tail wager of the Soviet Union, unregretful catalyst for a barely avoided superpower nuclear war, sower of discontent from one Andean peak to another, and the last surviving caudillo of Latin America, is finally in sight of his comeuppance. No man is an island, not even in the lush and potentially self-sufficient Caribbean. Cuba, during its first difficult decades after the revolution would not have survived without a political mentor and a military protector in Moscow. But then it could not have survived without a tolerant Europe that always refused to sign up for the American embargo. Even among moderate opinion in Europe, Fidel was more...