Amid the current violence of the Arab Spring on the shores of North Africa, the Middle East fighting in Gaza and Syria, and Russia’s aggression in Crimea, the Mediterranean nevertheless remains calm. No one today thinks of storming Malta, as did the Ottomans and the Nazis. Sicily is quiet in a way it had never been before 1945. Cretans fear neither Muslim invaders nor German paratroopers. Unlike elsewhere on the seas of the world — the rising tensions in the South China Sea, Iran’s ascendance in the Persian Gulf, the piratical raiding on the Red Sea — there are no active troublemakers on the Mediterranean. Will that always be so?