Environment & climate
Kyoto Protocol to the United Nations Framework Convention on Climate Change
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.
189/193
RatifiedUN member states
192 in total, incl. 3 non-UN members (Cook Islands, European Union, Niue)
1
Signed, not ratifiedUN member states
1
WithdrawnUN member states
2
No actionUN member states
| Country | Signature | Ratification | Withdrawal | Status |
|---|---|---|---|---|
| United States of America | 1998-11-12 | — | — | Signed, not ratified |