There are currently nine sovereign states generally understood to possess nuclear weapons.
Notes on verification
Consistently confirmed by multiple authoritative independent sources including FAS, Arms Control Association, UCS, and government/parliamentary research briefings.
Sources
- List of states with nuclear weapons (en.wikipedia.org)
- https://www.ucs.org/nuclear-weapons/worldwide (ucs.org)
- https://www.armscontrol.org/factsheets/nuclear-weapons-who-has-what-glance (armscontrol.org)
- https://commonslibrary.parliament.uk/research-briefings/cbp-9092/ (commonslibrary.parliament.uk)
- https://ourworldindata.org/nuclear-weapons (ourworldindata.org)
- https://www.icanw.org/nuclear_armed_nations (icanw.org)
- https://fas.org/initiative/status-world-nuclear-forces/ (fas.org)