I think the point of this bombing is to change the calculus you just mentioned. Now there’s an actual reason to not try for nukes, you may get bombed.
NK’s conventional weapons (and SK’s pointed right back at them) saved them from conflict, that’s how they got to nukes without us doing something like this. They already had mutually assured destruction from conventional weapons and proximity to an ally.
Iran’s problem is we don’t care much about anyone around them except Israel, and they already would destroy Israel if they could, so they had nobody’s head at which to aim their bullet.
NK’s government is an evil one but the Kims really like being alive and that keeps them somewhat rational. They are quite obviously not religious since they claim to be God (and surely are aware they are not), so they don’t believe in benefits to martyrdom.
Islamism is a death cult (and I mean that literally) so their actions aren’t rational as we would define the word. We can’t rely on their self-preservation instinct the way we can with the Kims.
