Declared Nuclear Weapon States (The "Big Five")
De-Facto Nuclear Weapon States
Suspected Secret Bomb Programs
Believed to Have Abandoned Bomb Programs
States Possessing Separated Plutonium
Heirs of the Soviet Breakup
Note: many U.S. analysts believe the list of countries attempting to acquire weapons may be larger. See Gray 1994 as an example.
Sources: "Factfile," Arms Control Today, July/August 1994, p. 28; Gray, P. Briefing Book on the Nonproliferation of Nuclear Weapons. Council for a Livable World, December 1993, pp. 7-10; Posey, C. "Nuclear World Order," Omni, February 1993, p. 43.
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