Wide 3249

Membership Information for: Comprehensive Nuclear Test Ban Treaty

Signed: 1996-09-10; Entered into force: 2599-01-01; Terminated:
Source for membership data: http://disarmament.un.org/treaties/t/ctbt
Last downloaded: 2016-10-15; Last known update: 2016-09-21
The following is data currently in the IEA database for agreement actions. Agreement actions (signature, ratification, entry into force) can change frequently. The IEA Database Project updates this data approximately once a year and tries to ensure it is current and accurate. You are encouraged to visit the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization website to look for the most accurate and up-to-date membership information. If you have questions about this data or notice inaccuracies, please contact the Project Director.
Country19961997199819992000200120022003200420052006200720082009201020112012201320142015201620172018201920202021
Ratifiers182651698997107119125136140147150152154156160162163165165166167167167
Members (agreement in force)00000000.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
Afghanistan00000001111111111111111111
Albania00000001111111111111111111
Algeria00000001111111111111111111
Andorra00000000001111111111111111
Angola00000000000000000001111111
Antigua and Barbuda00000000001111111111111111
Argentina00111111111111111111111111
Armenia00000000001111111111111111
Australia00111111111111111111111111
Austria00111111111111111111111111
Azerbaijan00011111111111111111111111
Bahamas00000000000111111111111111
Bahrain00000000111111111111111111
Bangladesh00001111111111111111111111
Barbados00000000000011111111111111
Belarus00001111111111111111111111
Belgium00011111111111111111111111
Belize00000000111111111111111111
Benin00000111111111111111111111
Bolivia00011111111111111111111111
Bosnia and Herzegovina00000000001111111111111111
Botswana00000011111111111111111111
Brazil00111111111111111111111111
Brunei Darussalam00000000000000000111111111
Bulgaria00011111111111111111111111
Burkina Faso00000011111111111111111111
Burundi00000000000011111111111111
Cambodia00001111111111111111111111
Cameroon00000000001111111111111111
Canada00111111111111111111111111
Cape Verde00000000001111111111111111
Central African Republic00000000000000111111111111
Chad00000000000000000111111111
Chile00001111111111111111111111
China00000000000000000000000000
Colombia00000000000011111111111111
Comoros00000000000000000000000000
Congo, Democratic Republic of00000000111111111111111111
Congo, Republic of the00000000000000000011111111
Cook Islands00000000011111111111111111
Costa Rica00000111111111111111111111
Cote d'Ivoire00000001111111111111111111
Croatia00000111111111111111111111
Cyprus00000001111111111111111111
Czechia01111111111111111111111111
Denmark00111111111111111111111111
Djibouti00000000011111111111111111
Dominican Republic00000000000111111111111111
Ecuador00000111111111111111111111
Egypt00000000000000000000000000
El Salvador00111111111111111111111111
Equatorial Guinea00000000000000000000000000
Eritrea00000001111111111111111111
Estonia00011111111111111111111111
Eswatini00000000000000000000111111
Ethiopia00000000001111111111111111
Fiji11111111111111111111111111
Finland00011111111111111111111111
France00111111111111111111111111
Gabon00001111111111111111111111
Gambia00000000000000000000000000
Georgia00000011111111111111111111
Germany00111111111111111111111111
Ghana00000000000000011111111111
Greece00011111111111111111111111
Grenada00111111111111111111111111
Guatemala00000000000000001111111111
Guinea00000000000000011111111111
Guinea-Bissau00000000000000000111111111
Guyana00000111111111111111111111
Haiti00000000011111111111111111
Holy See00000111111111111111111111
Honduras00000001111111111111111111
Hungary00011111111111111111111111
Iceland00001111111111111111111111
Indonesia00000000000000001111111111
Iran00000000000000000000000000
Iraq00000000000000000111111111
Ireland00011111111111111111111111
Israel00000000000000000000000000
Italy00011111111111111111111111
Jamaica00000111111111111111111111
Japan01111111111111111111111111
Jordan00111111111111111111111111
Kazakhstan00000011111111111111111111
Kenya00001111111111111111111111
Kiribati00001111111111111111111111
Korea, Republic of00011111111111111111111111
Kuwait00000001111111111111111111
Kyrgyzstan00000001111111111111111111
Laos00001111111111111111111111
Latvia00000111111111111111111111
Lebanon00000000000011111111111111
Lesotho00011111111111111111111111
Liberia00000000000001111111111111
Libya00000000111111111111111111
Liechtenstein00000000111111111111111111
Lithuania00001111111111111111111111
Luxembourg00011111111111111111111111
Madagascar00000000011111111111111111
Malawi00000000000011111111111111
Malaysia00000000000011111111111111
Maldives00001111111111111111111111
Mali00011111111111111111111111
Malta00000111111111111111111111
Marshall Islands00000000000001111111111111
Mauritania00000001111111111111111111
Mexico00011111111111111111111111
Micronesia01111111111111111111111111
Moldova00000000000111111111111111
Monaco00111111111111111111111111
Mongolia01111111111111111111111111
Montenegro00000000001111111111111111
Morocco00001111111111111111111111
Mozambique00000000000011111111111111
Myanmar00000000000000000000111111
Namibia00000111111111111111111111
Nauru00000111111111111111111111
Nepal00000000000000000000000000
Netherlands00011111111111111111111111
New Zealand00011111111111111111111111
Nicaragua00001111111111111111111111
Niger00000011111111111111111111
Nigeria00000111111111111111111111
Niue00000000000000000011111111
North Macedonia00001111111111111111111111
Norway00011111111111111111111111
Oman00000001111111111111111111
Palau00000000000111111111111111
Panama00011111111111111111111111
Papua New Guinea00000000000000000000000000
Paraguay00000111111111111111111111
Peru01111111111111111111111111
Philippines00000111111111111111111111
Poland00011111111111111111111111
Portugal00001111111111111111111111
Qatar01111111111111111111111111
Romania00011111111111111111111111
Russian Federation00001111111111111111111111
Rwanda00000000111111111111111111
Saint Kitts and Nevis00000000011111111111111111
Saint Lucia00000111111111111111111111
Saint Vincent and the Grenadines00000000000001111111111111
Samoa00000011111111111111111111
San Marino00000011111111111111111111
Sao Tome and Principe00000000000000000000000000
Senegal00011111111111111111111111
Serbia00000000111111111111111111
Seychelles00000000111111111111111111
Sierra Leone00000111111111111111111111
Singapore00000111111111111111111111
Slovakia00111111111111111111111111
Slovenia00011111111111111111111111
Solomon Islands00000000000000000000000000
South Africa00011111111111111111111111
Spain00111111111111111111111111
Sri Lanka00000000000000000000000000
Sudan00000000111111111111111111
Suriname00000000001111111111111111
Sweden00111111111111111111111111
Switzerland00011111111111111111111111
Tajikistan00111111111111111111111111
Tanzania00000000111111111111111111
Thailand00000000000000000000001111
Timor-Leste00000000000000000000000000
Togo00000000111111111111111111
Trinidad and Tobago00000000000000111111111111
Tunisia00000000111111111111111111
Turkey00001111111111111111111111
Turkmenistan00111111111111111111111111
Tuvalu00000000000000000000000000
Uganda00000111111111111111111111
Ukraine00000111111111111111111111
United Arab Emirates00001111111111111111111111
United Kingdom00111111111111111111111111
United States00000000000000000000000000
Uruguay00000111111111111111111111
Uzbekistan01111111111111111111111111
Vanuatu00000000011111111111111111
Venezuela00000011111111111111111111
Viet Nam00000000001111111111111111
Yemen00000000000000000000000000
Zambia00000000001111111111111111
Zimbabwe00000000000000000000000111
Members (agreement in force)00000000.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
Ratifiers182651698997107119125136140147150152154156160162163165165166167167167

Membership status is coded as follows:

  • Countries listed are those that have signed and/or ratified the IEA in question.
  • Legend:
    • 0 (pink): Signer: country signed but did not ratify IEA. Status is 0 for all countries until IEA enters into force.
    • 1 (yellow): Ratifier: country signed and ratified IEA but IEA had not entered into force. Status is 1 for countries that have ratified until IEA enters into force.
    • 2 (green):Member: country signed and ratified IEA and IEA has entered into force for that country.
    • Ratifier row is count of states that have ratified.
    • Membership row is count (not sum) of members.
  • If membership data source lacks entry into force date, membership is inferred from year of ratification, if that year occurs after entry into force year of IEA.
  • Status can return to 0 if an IEA is terminated or if a country withdraws. In rare cases, countries later re-join IEAs, with their status returning to 2.
  • Action tab: membership by Action, Country, Year, Month, Day.
  • Wide tab: Annual status data (countries as rows, years as columns).
  • Long tab: Annual status data in Stata format (Country, Year, Membership Status).