IRAN has returned to the front pages after a summer hiatus. Negotiations aimed at preventing the dreaded Persian Bomb have resumed their desultory course. Iran, although suffering from the international sanctions choreographed by the Obama administration, keeps adding new arrays of centrifuges while insisting the program is strictly nonmilitary. Israel is — or maybe isn’t — edging closer to a unilateral strike..... This strikes me as a good time to address an unnerving question that confronts any concerned student of this subject: Can we live with a nuclear Iran? [....] Now imagine that Iran succeeds in making its way into...