Link to drafting thread: viewtopic.php?f=9&t=398798
Rule broken: Duplication.
The things the proposal wants to do are already done by GAR #10:
NAPA wrote:3. REQUIRES that any nation choosing to possess nuclear weapons take every available precaution to ensure that their weapons do not fall into the wrong hands.
Any nation that would use nukes to break WA laws or which isn't "engaged in the peaceful exchange of nuclear armaments", easily falls into the category "wrong hands".
Furthermore, GAR #330 already directs member nations to secure at least the explodey bits of nukes as per this clause:
Nuclear Testing Protocol wrote:7. Further demands that member nations classify all information and materials related to nuclear testing as state secrets and prevent this information or material with anyone not authorized to have access to this information,
The "materials related to nuclear testing" would definitely include the materials needed to make an exploding nuclear device, thus the same stuff needed to make an exploding nuclear weapon.