MAD has had its virtues extolled, yet assume it won't work with another country because somehow they are even more irrational (if true). Even though that is exactly for whom the MAD strategy is designed and operates under.
It is only the build up of Iran getting a nuclear weapon that is used to go to war.
The game theory here seems rather simple, honestly.
And if Iran is seen as hostile, we need to look at the countries for whom the USA allies with and what wars they launched in the region. And they are plausible nuclear capable where their neighbors are not.
I think Israel is currently a larger aggressor, literally flattening more towns through demolition.