Arms control & security
Comprehensive Nuclear-Test-Ban Treaty
Not yet in force
This treaty hasn’t reached the number of ratifications its own text requires to take legal effect yet — signatures and early ratifications below are genuine steps toward that, not errors or missing data.
Source: UN Treaty Collection · scraped 2026-09-26
Figures below count the 193 UN member states separately from other parties to this treaty (international organizations and non-member observer states) — a treaty can have more parties than there are UN member states.
176/193
RatifiedUN member states
179 in total, incl. 3 non-UN members (Cook Islands, Holy See, Niue)
9
Signed, not ratifiedUN member states
0
WithdrawnUN member states
8
No actionUN member states
| Country | Signature | Ratification | Withdrawal | Status |
|---|
No countries match this filter.