Israel, India, and Pakistan have never signed the Non-Proliferation Treaty.
Notes on verification
Confirmed by multiple independent authoritative sources including Arms Control Association, Britannica, CFR, and the NPT's own Wikipedia page, all consistently stating India, Israel, and Pakistan never signed the treaty. [cascade flags: aggregator_dropped_primary_exists | tier=unverified indep_score=0.3 clusters=3 claim_tier=notable] [rescored 2026-09-15: curated origin-host map (PR #65); unclassified hosts no longer scored as aggregators]
Sources
- List of states with nuclear weapons (wikipedia)
- https://www.armscontrol.org/factsheets/nuclear-weapons-who-has-what-glance (corroboration)
- https://armscontrolcenter.org/fact-sheet-nuclear-non-proliferation-treaty-npt/ (corroboration)
- https://www.cfr.org/backgrounders/four-nuclear-outlier-states (corroboration)