"Well, my doctrine is as I've described, which is confidence in our cause, clarity in our purpose, and resolve in our might." -- Mitt Romney
In other words, "we are right, we don't question our rightness, and will bomb the hell out of anyone who gets in our way."
From everything that I have read, as long as things stay mostly the same, Iran will be able to eventually produce a nuclear weapon if they want to. Romney has stated in absolute terms (and of course doesn't seem to question himself) that a nuclear-armed Iran can not exist. When an inevitable action meets an absolute response there can be only one outcome.
If this wasn't bad enough, Romney is surrounding himself with a pack of neocons. E.g. John Bolton for whom bombs are the very first diplomatic option on the table. He also has a number of foreign policy advisors who are board members of Foreign Policy Initiative, a neoconservative advocacy group. These are a lot of the same guys who gave us the Iraq masterpiece. Trigger-happy fearmongers with a fetish for blowing humans into little pieces.