At some point having nukes might not make a difference though. To quote the mean, when everyone is special nobody is anymore, and having proxy access to nukes could be enough as a deterrent (e.g. being in an alliance that triggers a nuclear response in case of nuclear attack should be enough ?)
The problem is that wars inevitably break out between countries. They are bad enough with conventional means, but wars with nuclear arsenals can quickly scale to unimagineable catastrophies.
This the reason no nukes were dropped since WW2, and why I also think the next mass massacre won't be from nukes but any other mean that won't have the same international framework.
Vietnam wasn't nukes, and it wasn't just a fluke. Gaza wasn't nuked, yet the whole area is now flat.
