nuclear weapons are horrible tools of mass destruction that should not have been created in the first place.
but that doesn’t change the material reality, which is that the western capitalist world holds onto these weapons of mass destruction. just as its necessary to have an existing opposition to western hegemony, its necessary to have an opposition to the monopoly they hold on the nuclear arsenal.
what could cuba or venezeula do that would not have sanctions thrown onto them in a heartbeat? nothing, the sanctions of the capitalist world on these countries are not punishments for specific actions, they are punishments for ideology and for falling out of line with the capitalist world order.