Nukes are weapons of mass destruction that can only destroy or deter. Intelligence is dual-use/multi-use, with no restrictions on strategy. If we look at all organisms on Earth, species that are more intelligent are also more prosperous. This is true from bacteria, to insects, to animals, to humanity. Intelligence itself is not harmful.
There will be new adversarial games when everyone's smarter (bio/cyber offense/defense), but those games are always symmetrical in the long run, and there will also be new cooperative strategies. The reason some adversarial strategies appear to have an asymmetrical advantage right now is because we're too stupid, like how monkeys are too stupid to understand how humans work. Otherwise, we would not see more intelligent species being more prosperous as a general evolutionary trend.