I suspect most of us would agree nuclear weapons pose a grave threat to humanity..
Actually? Not as grave as all that-- even if everyone who has them, used them? It would not end life as we know it-- geology demonstrates that life is far more resilient than that.
Oh, civilization would collapse, without a doubt-- it's simply too fragile, and areas made comfortable with electricity, would be uninhabitable without, for a lack of water if nothing else. And the making and distribution of electricity is fragile indeed. Look how many decades it took to slowly build it up to it's present day...
But humans? They'd be around here or there, I am quite certain. Sure, the birthrate would go down (radiation poisoning), and the majority of the population would starve, but there would be pockets of survivors pretty much on every continent. Life would go on---just not as we know it.
Some folk, see that as a Planetary Cleansing. A curbing of the gross overpopulation that is the human animal.
Not I-- I
like Civilization.
A number of countries have them and some aspire to have them. Its been 74 years since the last nuclear bombs were used on Hiroshima and Nagasaki, Japan. As international relationships often become volatile the threat of the use of such weapons rears its head again. So who should have nuclear weapons at all and why?
I believe there’s a moral imperative not to have them at all, though all nations would need to agree to disarm simultaneously. Its a matter my own faith has a lot to say about. <snip>
The problem with Moral Imperatives? Is who gets to create them, and who enforces them and who's Morals do we use?
But. The problem is worse than you can imagine: The Knowledge is Out There. That ship has sailed-- that Genie was released decades ago.
I know, for example, how to construct a basic "Little Boy" (sliding cannon) device that would easily rival Hiroshima's destructive capability. That knowledge is readily available to anyone with a pocket phone, or a Library Card. Even the complex requirement to separate isotope 232 from 238 is Out There. Anyone, with the money and the will could do it, too-- no complex engineering required-- gather enough fissionable into one solid lump? Mamma Nature (or physics) does the rest....
Worse: Uranium based bombs are not the only bombs possible. Plutonium? Has been demonstrated countless times, and creating plutonium from uranium is also not
that hard to do. A Fat Man type bomb would be
much easier to do, today, than in 1945... we have modern ultra-fast computers in the palm of our hands...
Even worse: neither of these metals is the only way to make a Big Boom. Other trans-uranic isotopes are certainly possible, and would likely explode, given the right conditions.
Knowledge won't simply Go Away, just because a bunch of Big Bully governments or Self-Important Religions declare it so.
The harder you push to hide it? The more that knowledge squirts through Big Bully fingers into the little guys who are desperate to get out from under such things.
A more Sane approach? Would be to encourage Civilized Thought, that does not need or require Such Things-- you are NOT going to get there with RELIGION.
Religion has had it's Chance: 4000+ years, and humans
STILL squabble and scratch, with a tiny fraction holding Most of the Cards, and everyone else gets nothing but hard pan and dry dirt.
As long as we have the top 1% holding the top 90% of Resources? Big Bombs are going to be a Way Of Life.
And no-- I don't have a Solution. I can only point to what has not worked, and likely never will-- Religion being The #1 Fail, here.