list of states with nuclear weapons

References & Edit History

Images

Diagram of a thermonuclear warhead cut open to reveal internal components, including a primary fission trigger with deuterium-tritium gas, plutonium-239, beryllium, and chemical explosives, and a secondary fusion device with uranium-235, lithium deuteride fusion fuel, and a uranium case, all labeled for educational reference.

World map titled “Status of World Nuclear Forces” with legend: gray (0), light yellow (1–100), orange (100–200), dark orange (200–300), dark red (4,000–4,500).

list of states with nuclear weapons: References & Edit History

Article Contributors

Primary Contributors

Adam Zeidan

Other Encyclopedia Britannica Contributors

Rick Livingston

Article History

Type	Description	Contributor	Date
	Added media.	Rick Livingston	Mar 23, 2026
	Media added.	Adam Zeidan	May 01, 2025
	New article added.	Adam Zeidan	Jul 17, 2023