Much of the world has greeted Ahmadinejad’s promise to wipe Israel off the map with something close to insouciance. In fact, it could almost be said of the Europeans that they have been more upset by Ahmadinejad’s denial that a Holocaust took place 60 years ago than by his determination to set off one of his own as soon as he acquires the means to do so. In a number of European countries, Holocaust denial is a crime, and the European Union only recently endorsed that position. Yet for all their retrospective remorse over the wholesale slaughter of Jews back then, the Europeans seem no readier to lift a finger to prevent a second Holocaust than they were the first time around.
~ Norman Podhoretz, The Case for Bombing Iran
I don't know about the efficacy of his case, but that quote rings true to me.