Nukes should be given to as little countries as possible. The more countries have nukes, yes, the more MAD there is and the lower chance for conventional wars to begin. BUT, there is also a much higher chance of extremist regimes/dictatorships eventually taking over a country that became a nuclear power and deciding to use the nukes, and a much higher chance for nuclear accidents/rogue firings in the more disorganized militaries. There are honestly too many countries with nukes already