Exactly that , if a country want to survive against hostile countries it must have to achieve the deterrence power . We learned it from the destruction of Iraq and Syria . When Qaddafi compromised his nuclear activities with exchange of western friendship, he was vulnerable and destroyed quickly.It would be the end of humanity, if you use them in countries without a nuclear weapon the damage will be limited to that country and to the neighbors, but certainly the honor throws it into the thorny brambles.
if, on the other hand, you use them against countries with nuclear weapons, you are sure that others will respond with nuclear weapons, with a response and a countermove, there is the risk of a nuclear holocaust also for the United States
But Kim played a very good game with Trump and buy some time . Now USA don'the dare to bomb North Korea.
On the other hand The Islamic Republic is threatened by hostile neighbors and entrenched by America to invade. One of it's enemy itself a nuclear weapons state – has been bomberding it's foreign bases and killing dozens.
Iran gambled it's national interests by signing JCPOA before achieving nuclear capabilities is the main cause of its economic humiliation .
It was a strategic mistake by Iran to negotiate before it had nuclear weapons.
Tehran should have followed the successful strategy of North Korea,
negotiating only after it had bombs and delivery systems.
It is a matter of sorrow that IRI buried it's nuclear activities, fully compliances with the deal, they get nothing from other signatories except ' sorry ' and uf ah . They didn't learned from the treacherous behaviour of the west , from the fate of Qaddafi.