as long as states like Iran aren’t getting access

This is kind of the whole argument against nuclear proliferation though. The more bombs that exist, the harder it is to keep it out of the hands of completely unpredictable groups like iran. You have allies to radical Islam all over the world, it’s how you get the kind of coordinated terrorism on the scale of 9/11 and the Paris attacks. Even one single security slip up might be enough to completely fuck us all.

The barrier to entry between terrorists and nuclear weapons needs to be kept watertight, rock solid, and a mile thick, and you really can’t expect that on a global scale, it’s just the law of large numbers. The risks of proliferation therefore, in my opinion at least, are completely unacceptable

Edit: also I just want to mention that the swords/guns metaphor really doesn’t work because this is a problem that potentially concerns the security of literally all life on earth. There is no historical precedent beyond a few decades of REALLY precarious history. That precedent is being set every single day with every policy and every minute to minute decision. The danger to humanity is very real