Given that the Iranian political authority does not leave others alone, your demand that they be left alone seems one sided.
1. Have you ever heard of the fatwa issued against Salman Rushdie?
Over a book? He remains under sentence to death for writing bad fiction, on religious grounds, hence blasphemy. (I read the book after it came out, partly to see what the fuss was, partly to expand my reading horizons. Rushdie never met pith.) Granted, the book wasn't very good, but it wasn't worth killing him over it.
That policy, the fatwa, remains in place, over twenty years later, and caused trouble at a book club/meeting in India recently.
2. You might also find a few Sunni Iraqis who can tell you that Iran's meddling in Iraq is not welcome.
I find your PoV a bit too narrow to be credible, for all that some of the World's various powers may have clumsy policy arms their own selves.