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

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