Test must be assessed as “full scale” by CTBO or other national or international agency with the knowledge and capability to make such assessments.. A subcritical test or other partial test of components does not count. A failed full scale test,aka “a Dud”, will not satisfy the requirement.

Countries listed are: (a) known to have nuclear weapons, (b)have nuclear weapons capabilities under development, or (c) known to have had nuclear weapons development programs that have been shutdown.