After two years of disastrous dialogue, and more of the same in recent days, we can conclude that no diplomatic initiative can stop Iran from getting the bomb. The International Atomic Energy Agency meets again this week to discuss the mullahs' nuclear ambitions, while Russia floats a plan to get Iran to enrich uranium on its soil. But before we got to this point, we had the Europeans in the starring role. The foreign ministers of the leading European Union countries--Britain, France and Germany--did try for years to persuade Iran to give up its nuclear ambitions, most recently at Friday's...