Surely such a proposal has already been made, but I will say it anyway.I propose to introduce chemical weapons into the game, which within the game will play the role of nuclear weapons until they are studied. It seems to me that, for the most part, in reality this was the case.
There are some analogies:
Chemical weapons, as soon as they were developed, were immediately put into action in the First World War. It was a terrible weapon that everyone hated and banned. Despite the ban, it was created and developed in all the great powers. By the time of the Second World War, its reserves and its danger were so great that the warring countries did not use it for fear of response and escalation. At that time, it was indeed relatively dangerous (not for soldiers, but for states as a whole). Even the Nazis were afraid to use it against Soviet soldiers and citizens after the British threatened an immediate reaction and response.
Nuclear weapons, as soon as they were developed, were immediately put into action in the Second World War. It was a terrible weapon, which, although it was not possible to ban it, it was possible to limit the number of countries that had it, and it was also possible to achieve a reduction in ammunition. By the time of the supposed third world war, its reserves and danger were so great that countries did not even dare to start a war for fear of response and escalation (I think a more powerful reaction arose not only due to the fact that nuclear weapons are still more powerful than chemical weapons , but also because of the television propaganda of the Cold War. It is sad to know that perhaps it will pass and this will cause new wars between countries that are now afraid to fight. They simply will not use nuclear weapons, just as chemical weapons were not used in World War II ).