AAmerica is no more. Some might say it never was. But it once existed as a place where spasms of uncurbed irrational power sooner or later ran up against boundaries of reason and restraint. Sometimes the country hid its low behaviour behind its high ideals. Sometimes its high ideals shamed its low behaviour. Sometimes it simply lived up to its high ideals. No longer. The war America is waging against Iran is unprovoked, unfounded and unnecessary. It does not even have the predatory logic of colonial intention. It makes the wars in Vietnam and Iraq look rational and justified –...