The first nuke war (both sides having nukes) will be fought between India and China and it will be over the dwindling meltwater coming from the Himalayan ice sheet. Currently that ice sheet waters 1/4 of all humanity in India, China and IndoChina (Mekong River.)I have a problem with the premise of the question. It isn’t good that anyone has nukes. So the fewer countries that have them, the better.