This reminds me of a discussion I was having with Hexbear members on Lemmy recently.

I was suggesting that perhaps it makes sense for the UK to have nukes, for self-defence against other nuclear countries like Russia, China, and potentially even the US, given their unpredictable behaviour. People from Hexbear got angry at this suggestion. One of them suggested that it's immoral to have nukes because nukes are "threatening civilians".

Maybe the OP image of this thread is right though: megalomaniacs are not deterred by words, but they are deterred by weapons (such as nukes). Ukraine was invaded because they didn't have enough deterrents. Iran is currently being bombed because I suppose they also didn't have enough deterrents.