The Nobel Peace Prize-winning 2017 Treaty on the Prohibition of Nuclear Weapons (Nuclear Ban Treaty) outlaws EVERYTHING to do with nuclear weapons in the countries that have ratified it.
The nine nuclear-armed nations are thus under growing pressure from the rest of the world to eliminate this threat to everyone. And so are the profiteering companies that make and maintain nuclear weapons, along with their investors, suppliers and enablers, who could be breaking the law in those countries.
The Treaty gives legal weight, power, and credibility to disarmament efforts worldwide. It's also a wonderful read!