A more thorough explanation:

The Nonproliferation Bureau is an organization that works to prevent the spread of nuclear weapons and other weapons of mass destruction.

The Nonproliferation Bureau is responsible for monitoring countries to ensure they are not developing nuclear weapons.

Non Prosequitur is a Latin term that means "he does not prosecute." It is a legal term used to describe a judgment rendered against a plaintiff who has not pursued the case.

If a plaintiff fails to show up to court or fails to take any action in their case, the judge may issue a non prosequitur judgment against them.