A slightly different tack
This is not with reference to theatre weapons which in my view include potential terrorist nukes. Just the big buggers.
I cannot see an alternative to having nukes. We live with too many "friends" and not such friends who own them to give them up. Would, quite apart from anyone else, the US take us so seriously if we weren't a nuclear power? Would they take us more seriously if we had an independent nuclear deterrent?
In the end, nuclear weapons aren't just a deterrent. They are also a membership badge for a "big boys'" club. It is school playground politics but who the hell would talk to us on the big issues if we got rid of them?
In addition, I perfectly understand Iran's perspective, why should they be surrounded by nukes but not have any themselves. In a way perhaps the more of them that there are the more convesation would go on and the less sabre rattling.
I am not saying that it is right, just that I can see the sense in it.
