A nuclear war produces nothing left of any value to anyone. Instead there would be decades of severe life threatening hazardous locations many of which didn’t get hit with a nuclear weapon. Mass chaos would be the norm worldwide that no government would be able to control let alone think they could profit from.
People need to get it into their heads that all of the world’s needed healthcare are located in major cities.
It also needs to be understood that two or more countries shooting nukes at each other will suddenly turn the rest of the world’s population into instant and uncontrollable chaos.
War, after all the death and destruction, must result in the building of an infrastructure that is of value to those who are driven by power and success. A barren land radiated by bombs will not provide that for anyone.