That isn't exactly the point in having them. They aren't offensive weapons, or even defensive - more a sobering "What happens if I do this?" sort of thing. If you ever pull the trigger you kill the human race.
This has been necessary since the USA decided to use them in 1945. If one side doesn't have them you can use them without fear of reprisal.
I do think if it weren't for nuclear weapons we certainly would have had a third world war by now.
That was the whole point, under what circumstances would the UK alone be targeted and our allies with Nuclear weapons not respond? So if one of the founding UN Countries is attacked they won't respond?
This theoretical circumstance where they can attack without fear of reprisal doesn't exist now and it wouldn't if the UK disarmed.
I think this could actually be a useful bargaining chip with Europe, give us a good deal or we scrap Trident to help pay the tariffs.
