Contact: Daryl Kimball, Executive Director, (202) 463-8270 x107
Despite overwhelming global support and decades of global efforts to promote the entry into force of the Comprehensive Test Ban Treaty (CTBT), the treaty’s enactment still appears a long way off, due to the treaty's unusually onerous entry into force provision, which requires ratification by 44 states (listed in Annex 2 of the treaty). To date, 187 states have signed and 174 have ratified the treaty. Of the 44 specified countries, India, Pakistan, and North Korea still have not signed, and six others (China, Egypt, Iran, Israel, the United States) have not yet ratified the pact. Although Russia ratified the CTBT in 2000, it withdrew its ratification of the CTBT in 2023 to "mirror" the posture of the United States; as a treaty signatory, Russia remains obligated not to take any action contrary to the object or purpose of the treaty, which bars all nuclear test explosions, at any yield.
For more information on the CTBT, see Comprehensive Test Ban Treaty at a Glance.
The following chart identifies the treaty’s signatories and ratifiers. States whose ratification is required for the treaty to take effect are shaded and marked with an asterisk (*).
Total Signatories: 187
Total Ratifiers: 177
Annex 2 Ratifications (out of 44): 35
Country
|
Signature
|
Ratification
|
Afghanistan | 9/24/03 | 9/24/03 |
Albania | 9/27/96 | 4/23/03 |
Algeria* | 10/15/96 | 7/11/03 |
Andorra | 9/24/96 | 7/12/06 |
Angola | 9/27/96 | 3/20/15 |
Antigua and Barbuda | 4/16/97 | 1/11/06 |
Argentina* | 9/24/96 | 12/4/98 |
Armenia | 10/1/96 | 7/12/06 |
Australia* | 9/24/96 | 7/9/98 |
Austria* | 9/24/96 | 3/13/98 |
Azerbaijan | 7/28/97 | 2/2/99 |
Bahamas | 2/4/05 | 11/30/07 |
Bahrain | 9/24/96 | 4/12/04 |
Bangladesh* | 10/24/96 | 3/8/00 |
Barbados | 1/14/08 | 1/14/08 |
Belarus | 9/24/96 | 9/13/00 |
Belgium* | 9/24/96 | 6/29/99 |
Belize | 11/14/01 | 3/26/04 |
Benin | 9/27/96 | 3/6/01 |
Buhtan | ||
Bolivia | 9/24/96 | 10/4/99 |
Bosnia and Herzegovina | 9/24/96 | 10/26/06 |
Botswana | 9/16/02 | 10/28/02 |
Brazil* | 9/24/96 | 7/24/98 |
Brunei Darussalam | 1/22/97 | 1/10/13 |
Bulgaria* | 9/24/96 | 9/29/99 |
Burkina Faso | 9/27/96 | 4/17/02 |
Burundi | 9/24/96 | 9/24/08 |
Cambodia | 9/26/96 | 11/10/00 |
Cameroon | 11/16/01 | 2/6/06 |
Canada* | 9/24/96 | 12/18/98 |
Cape Verde | 10/1/96 | 3/1/06 |
Central African Republic | 12/19/01 | 5/26/10 |
Chad | 10/8/96 | 2/8/13 |
Chile* | 9/24/96 | 7/12/00 |
China* | 9/24/96 | |
Colombia* | 9/24/96 | 1/29/08 |
Comoros | 12/12/96 | |
Congo | 2/11/97 | 9/2/14 |
Cook Islands | 12/5/97 | 9/6/05 |
Costa Rica | 9/24/96 | 9/25/01 |
Côte d'Ivoire | 9/25/96 | 3/11/03 |
Croatia | 9/24/96 | 3/2/01 |
Cuba | ||
Cyprus | 9/24/96 | 7/18/03 |
Czech Republic | 11/12/96 | 9/11/97 |
Dem. Republic of Congo* | 10/4/96 | 9/28/04 |
Denmark | 9/24/96 | 12/21/98 |
Djibouti | 10/21/96 | 7/15/05 |
Dominica | ||
Dominican Republic | 10/3/96 | 9/4/07 |
Ecuador | 9/24/96 | 11/12/01 |
Egypt* | 10/14/96 | |
El Salvador | 9/24/96 | 9/11/98 |
Equatorial Guinea | 10/9/96 | |
Eritrea | 11/11/03 | 11/11/03 |
Estonia | 11/20/96 | 8/13/99 |
Ethiopia | 9/25/96 | 8/8/06 |
Fiji | 9/24/96 | 10/10/96 |
Finland* | 9/24/96 | 1/15/99 |
France* | 9/24/96 | 4/6/98 |
Gabon | 10/7/96 | 9/20/00 |
Gambia | 4/9/03 | |
Georgia | 9/24/96 | 9/27/02 |
Germany* | 9/24/96 | 8/20/98 |
Ghana | 10/3/96 | 06/14/11 |
Greece | 9/24/96 | 4/21/99 |
Grenada | 10/10/96 | 8/19/98 |
Guatemala | 9/20/99 | 1/12/12 |
Guinea | 10/3/96 | 09/20/11 |
Guinea-Bissau | 4/11/97 | 09/30/13 |
Guyana | 9/7/00 | 3/7/01 |
Haiti | 9/24/96 | 12/1/05 |
Holy See | 9/24/96 | 7/18/01 |
Honduras | 9/25/96 | 10/30/03 |
Hungary* | 9/25/96 | 7/13/99 |
Iceland | 9/24/96 |
6/26/00 |
India* | ||
Indonesia* | 9/24/96 | 2/6/12 |
Iran* | 9/24/96 | |
Iraq | 8/19/08 | 09/26/13 |
Ireland | 9/24/96 | 7/15/99 |
Israel* | 9/25/96 | |
Italy* | 9/24/96 | 2/1/99 |
Jamaica | 11/11/96 | 11/13/01 |
Japan* | 9/24/96 | 7/8/97 |
Jordan | 9/26/96 | 8/25/98 |
Kazakhstan | 9/30/96 | 5/14/02 |
Kenya | 11/14/96 | 11/30/00 |
Kiribati | 9/7/00 | 9/7/00 |
Kuwait | 9/24/96 | 5/6/03 |
Kyrgyzstan | 10/8/96 | 10/02/03 |
Laos | 7/30/97 | 10/5/00 |
Latvia | 9/24/96 | 11/20/01 |
Lebanon | 9/16/05 | 11/21/08 |
Lesotho | 9/30/96 | 9/14/99 |
Liberia | 10/1/96 | 8/17/09 |
Libya | 11/13/01 | 1/6/04 |
Liechtenstein | 9/27/96 | 9/21/04 |
Lithuania | 10/7/96 | 2/7/00 |
Luxembourg | 9/24/96 | 5/26/99 |
Macedonia | 10/29/98 | 3/14/00 |
Madagascar | 10/9/96 | 9/15/05 |
Malawi | 10/9/96 | 11/21/08 |
Malaysia | 7/23/98 | 1/17/08 |
Maldives | 10/1/97 | 9/7/00 |
Mali | 2/18/97 | 8/4/99 |
Malta | 9/24/96 | 7/23/01 |
Marshall Islands | 9/24/96 | 10/28/09 |
Mauritania | 9/24/96 | 4/30/03 |
Maritius | ||
Mexico* | 9/24/96 | 10/5/99 |
Micronesia | 9/24/96 | 7/25/97 |
Moldova | 9/24/97 | 1/16/07 |
Monaco | 10/1/96 | 12/18/98 |
Mongolia | 10/1/96 | 8/8/97 |
Montenegro | 10/23/06 | 10/23/06 |
Morocco | 9/24/96 | 4/17/00 |
Mozambique | 9/26/96 | 11/4/08 |
Myanmar | 11/25/96 | 9/21/16 |
Namibia | 9/24/96 | 6/29/01 |
Nauru | 9/8/00 | 11/12/01 |
Nepal | 10/8/96 | |
Netherlands* | 9/24/96 | 3/23/99 |
New Zealand | 9/27/96 | 3/19/99 |
Nicaragua | 9/24/96 | 12/5/00 |
Niger | 10/3/96 | 9/9/02 |
Nigeria | 9/8/00 |
9/27/01 |
Niue | 4/9/12 | 3/5/14 |
North Korea* | ||
Norway* | 9/24/96 | 7/15/99 |
Oman | 9/23/99 | 6/13/03 |
Pakistan* | ||
Palau | 8/12/03 | 8/1/07 |
Panama | 9/24/96 | 3/23/99 |
Papua New Guinea | 9/25/96 | |
Paraguay | 9/25/96 | 10/4/01 |
Peru* | 9/25/96 | 11/12/97 |
Philippines | 9/24/96 | 2/23/01 |
Poland* | 9/24/96 | 5/25/99 |
Portugal | 9/24/96 | 6/26/00 |
Qatar | 9/24/96 | 3/3/97 |
Romania* | 9/24/96 | 10/5/99 |
Russia* | 9/24/96 |
6/30/00 (*Revoked its ratification in 2023) |
Rwanda | 11/30/'2004 | 11/30/04 |
St. Kitts and Nevis | 3/33/04 | 4/27/05 |
St. Lucia | 10/4/96 | 4/5/01 |
St. Vincent and the Grenadines | 7/2/09 | 9/23/09 |
Samoa | 10/9/96 | 9/27/02 |
San Marino | 10/7/96 | 3/12/02 |
Sao Tome and Principe | 9/26/96 | |
Saudi Arabia | ||
Senegal | 9/26/96 | 6/9/99 |
Serbia and Montenegro | 6/8/01 | 5/19/04 |
Seychelles | 9/24/96 | 4/13/04 |
Sierra Leone | 9/8/00 | 9/17/01 |
Singapore | 1/14/99 | 11/10/01 |
Slovakia* | 9/30/96 | 3/3/98 |
Slovenia | 9/24/96 | 8/31/99 |
Solomon Islands | 10/3/96 | |
Somalia | ||
South Africa* | 9/24/96 | 3/30/99 |
South Korea* | 9/24/96 | 9/24/99 |
South Sudan | ||
Spain* | 9/24/96 | 7/31/98 |
Sri Lanka | 10/24/96 | |
Sudan | 6/10/04 | 6/10/04 |
Suriname | 1/14/97 | 2/7/06 |
Swaziland | 9/24/96 | 9/21/16 |
Sweden* | 9/24/96 | 12/2/98 |
Switzerland* | 9/24/96 | 10/1/99 |
Syria | ||
Tajikistan | 10/7/96 | 6/10/98 |
Tarzania | 9/30/04 | 9/30/04 |
Thailand | 11/12/96 | 9/25/18 |
Timor-Leste | 9/26/08 | |
Togo | 10/2/96 | 7/2/04 |
Tonga | ||
Trinidad and Tobago | 10/8/09 | 5/26/10 |
Tunisia | 10/16/96 | 9/23/04 |
Turkey* | 9/24/96 | 2/16/00 |
Turkmenistan | 9/24/96 | 2/20/98 |
Tuvalu | 9/25/18 | |
Uganda | 11/7/96 | 3/14/01 |
Ukraine* | 9/27/96 | 2/23/01 |
United Arab Emirates | 9/25/96 | 9/18/00 |
United Kingdom* | 9/24/96 | 4/6/98 |
United States* | 9/24/96 | |
Uruguay | 9/24/96 | 9/21/01 |
Uzbekistan | 10/3/96 | 5/29/97 |
Vanuatu | 9/24/96 | 9/16/05 |
Venezuela | 10/3/96 | 5/13/02 |
Viet Nam* | 9/24/96 | 3/10/06 |
Yemen | 9/30/96 | |
Zambia | 12/3/96 | 2/23/06 |
Zimbabwe | 10/13/99 | 2/13/19 |