There are several Sunni nations that have had the bomb for many years; I think we know who they are, and they are not moderate either. When did their first terror nuke go off in a target country?
Only Pakistan can I recollect; and they have nukes as a balance against India; and Pakistan has had some secular leaders and; even then, it has been a sensitive situation.
Not so sensitive that they have thought to send a nuke or two our way. Of course, if the Taliban were to take over there, the calculus changes radically.