It isn't as much nukes, though of course nukes are horrific in destructive capability.
Let me take it down to a more benign level, let us say Enfield rifles which can do serious damage to another human being.
I think it is ok for law abiding citizens to have Enfield rifles. Or like rifles (I have rifles myself). Take these girls for example:
Girls from the Durga Vahini, the women's faction of the Vishwa Hindu Parishad or World Hindu Council, getting rifle training at an enclosed range (below).
In fact, I think militias (militia in the original American terms, not as in "State militias" but private armies of private citizens) are ok ...
But ...
If you are a gang-banger criminal caught using a gun in a crime, no you should not be allowed an Enfield. No no. Nice Hindu girls of VHP, yes, Mexican gang-banger, no.
In fact, I think if you are caught using a gun in a crime, on the third instance you should be executed.
So it would have been an issue if Hitler got the nuke in 1945, because he WOULD have dropped it on Stalingrad and Moscow ..
Japan tried to drop containers of fleas with bubonic plague by balloons into San Francisco CA during WW2 but missing and they landed in the boonies of Washington and Oregon and were useles. I do not think Japan should have gotten the nuke in 1944 because they would have nuked China. ....
But today, I think Japan needs to REARM and I would not have a problem with them having the nuke.
In fact, they probably will need it soon ...
I DON'T like Pakistan having the nuke. But - I DO like India having it.
You see, Iran is bent on killing all the Jews - well, some of the top Mullahs running Iran. So until Iran undergoes a complete reformation like Japan, everything must be done to stop that until their own people overthrow the Mullahs ... which WILL happen but not right now.
That would be like Mexican gang bangers having Enfields legally. But they have far worse and are working with the Islamic terrorist to come over the Southern US-Mexican border. This is what Obama calls "immigration". It is so bad in fact, this invasion and stress, not only will it NOT result in better relations with Mexico which could soon become another failed state, in fact given time this will result in exactly the opposite, an open border will result in WAR with Mexico.
We may even have to nuke some city in Mexico if it is taken over by cartel terrorists working with other terrorists including Islamic terrorists.