Comprehensive Nuclear-Test-Ban Treaty (CTBT)
Ongoing

The CTBT bans all nuclear explosions anywhere on Earth whether for military or peaceful purposes.

 

Adopted: 10 September 1996

Entered into force: not yet in force

Ratifications: 170 (see table below).

Signatures: 185 (all of which are members of the "Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization" in Vienna, Austria)

Annex 2 states that have signed and ratified the Treaty: 36 (44 states required) (not ratified: China (People's Republic of), Democratic People's Republic of Korea, Egypt, India, Iran, Israel, Pakistan and the United States.)

 

The text of the CTBT is available here.

The text of the CTBT is also reproduced in Nuclear Law Bulletin No. 58.

The current status of the CTBT is available here.

The following articles related to the CTBT were published in the Nuclear Law Bulletin:

  • Comprehensive Ban on Nuclear Tests, by J. Bourgois (NLB 59, p. 7).
  • The Comprehensive Nuclear Test Ban Treaty – Eight Years After the Opening of the Treaty for Signature: What is the Situation?, by G. Le Goff and D. Rousseau (NLB 74, p. 9).

 

Contracting States to the Comprehensive Nuclear Test Ban Treaty
Afghanistan Czech Republic* Latvia Qatar
Albania Democratic Republic of the Congo Lebanon Romania*
Algeria Denmark Lesotho Russia*
Andorra Djibouti Liberia Rwanda
Angola Dominican Republic Libya Saint Kitts and Nevis
Antigua and Barbuda Ecuador Liechtenstein Saint Lucia
Argentina* El Salvador Lithuania Saint Vincent and the Grenadines
Armenia* Eritrea Luxembourg Samoa
Australia Estonia Madagascar San Marino
Austria Eswatini Malawi Senegal
Azerbaijan Ethiopia Malaysia Serbia
Bahamas Fiji Maldives Seychelles
Bahrain Finland* Mali Sierra Leone
Bangladesh France* Malta Singapore
Barbados Gabon Marshall Islands Slovak Republic*
Belarus* Georgia Mauritania Slovenia*
Belgium* Germany* Mexico* South Africa*
Belize Ghana Micronesia Spain*
Benin Greece Moldova Sudan
Bolivia Grenada Monaco Suriname
Bosnia and Herzegovina Guatemala Mongolia Sweden*
Botswana Guinea Montenegro Switzerland*
Brazil* Guinea-Bissau Morocco Tajikistan
Brunei Darussalam Guyana Mozambique Tanzania
Bulgaria* Haiti Myanmar Thailand
Burkina Faso Holy See Namibia Togo
Burundi Honduras Nauru Trinidad and Tobago
Cabo Verde Hungary* Netherlands* Tunisia
Cambodia Iceland New Zealand Turkey
Cameroon Indonesia Nicaragua Turkmenistan
Canada* Iraq Niger Uganda
Central African Republic Ireland Nigeria Ukraine*
Chad Italy Niue United Arab Emirates*
Chile Jamaica North Macedonia United Kingdom*
Colombia Japan* Norway Uruguay
Comoros Jordan Oman Uzbekistan
Congo Kazakhstan Palau Vanuatu
Cook Islands Kenya Panama Venezuela
Costa Rica Kiribati Paraguay Viet Nam
Côte d'Ivoire Korea* Peru Zambia
Croatia Kuwait Philippines Zimbabwe
Cuba Kyrgyzstan Poland  
Cyprus Lao People's Democratic Republic Portugal  

* Country with at least one nuclear power plant in operation.