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: 172 (see table below).

Signatures: 186 (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* Lao's People Democratic Republic Portugal
Albania Democratic Republic of the Congo Latvia Qatar
Algeria Denmark Lebanon Romania*
Andorra Djibouti Lesotho Russia*
Angola Dominican Republic Liberia Rwanda
Antigua and Barbuda Ecuador Libya Saint Kitts and Nevis
Argentina* El Salvador Liechtenstein Saint Lucia
Armenia* Eritrea Lithuania Saint Vincent and the Grenadines
Australia Estonia Luxembourg Samoa
Austria Eswatini Madagascar San Marino
Azerbaijan Ethiopia Malawi Senegal
Bahamas Fiji Malaysia Serbia
Bahrain Finland* Maldives Seychelles
Bangladesh France* Mali Sierra Leone
Barbados Gabon Malta Singapore
Belarus* Gambia Marshall Islands Slovak Republic*
Belgium* Georgia Mauritania Slovenia*
Belize Germany* Mexico South Africa*
Benin Ghana Micronesia Spain*
Bolivia Greece Moldova Sudan
Bosnia and Herzegovina Grenada Monaco Suriname
Botswana Guatemala Mongolia Sweden*
Brazil* Guinea Montenegro Switzerland*
Brunei Darussalam Guinea-Bissau Morocco Tajikistan
Bulgaria* Guyana Mozambique Tanzania
Burkina Faso Haiti Myanmar Thailand
Burundi Holy See Namibia Togo
Cabo Verde Honduras Nauru Trinidad and Tobago
Cambodia Hungary* Netherlands* Tunisia
Cameroon Iceland New Zealand Türkiye
Canada* Indonesia Nicaragua Turkmenistan
Central African Republic Iraq Niger Tuvalu
Chad Ireland Nigeria Uganda
Chile Italy Niue Ukraine*
Colombia Jamaica North Macedonia United Arab Emirates*
Comoros Japan* Norway United Kingdom*
Congo Jordan Oman Uruguay
Cook Islands Kazakhstan Palau Uzbekistan
Costa Rica Kenya Panama Vanuatu
Côte d'Ivoire Kiribati Paraguay Venezuela
Croatia Korea* Peru Viet Nam
Cuba Kuwait Philippines Zambia
Cyprus Kyrgyzstan Poland Zimbabwe

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