Nuclear Non-Proliferation Treaty (NPT) and North Korea's Withdrawal
The Treaty on the Non-Proliferation of Nuclear Weapons (NPT), opened for signature in 1968, recognises five nuclear-weapon states (US, Russia, UK, France, China) and aims to prevent the spread of nuclear weapons to others. North Korea signed the NPT in 1985 but announced withdrawal on January 10, 2003 — effective April 10, 2003 — making it the first and only state to ever withdraw from the treaty. The withdrawal followed US accusations of a secret uranium enrichment programme in violation of the 1994 Agreed Framework. As a non-NPT state, North Korea is not subject to IAEA safeguards and has since conducted six nuclear tests (2006, 2009, 2013, 2016 (twice), 2017).
- NPT: Opened 1968, entered into force 1970; 191 state parties (as of 2024); India, Pakistan, Israel never joined
- Five Nuclear-Weapon States (NWS) under NPT: US, Russia, UK, France, China
- Article VI: NWS obligated to "pursue negotiations in good faith" toward nuclear disarmament
- North Korea: Withdrew April 10, 2003 — first ever NPT withdrawal
- Six nuclear tests: 2006, 2009, 2013, February 2016, September 2016, 2017 (hydrogen bomb claimed)
- North Korea's estimated arsenal: ~40–50 warheads (various estimates)
● Tracked since March 24, 2026 · last seen April 19, 2026 · updates as the daily brief publishes