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Membership Information for: Comprehensive Nuclear Test Ban Treaty

Signed: 1996-09-10; Entered into force: 2599-01-01; Terminated:
Source for membership data: http://www.ctbto.org/the-treaty/status-of-signature-and-ratification/
Date of last download from source: 2022-01-01
This is the IEADB's most current data on signature, ratification, entry into force, and other membership actions. The IEADB updates this data approximately once a year and tries to ensure it is current and accurate. For the most current data, visit the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization website. For inaccuracies, please notify the Project Director.
Agreement Action Country Year Month Day Edit link
Ratification, Accession, Succession, or Similar Namibia 2001 6 29
Ratification, Accession, Succession, or Similar Nauru 2001 11 12
Ratification, Accession, Succession, or Similar Netherlands 1999 3 23
Ratification, Accession, Succession, or Similar New Zealand 1999 3 19
Ratification, Accession, Succession, or Similar Nicaragua 2000 12 5
Ratification, Accession, Succession, or Similar Niger 2002 9 9
Ratification, Accession, Succession, or Similar Nigeria 2001 9 27
Ratification, Accession, Succession, or Similar Niue 2014 3 4
Ratification, Accession, Succession, or Similar North Macedonia 2000 3 14
Ratification, Accession, Succession, or Similar Norway 1999 7 15
Ratification, Accession, Succession, or Similar Oman 2003 6 13
Ratification, Accession, Succession, or Similar Palau 2007 8 1
Ratification, Accession, Succession, or Similar Panama 1999 3 23
Ratification, Accession, Succession, or Similar Paraguay 2001 10 4
Ratification, Accession, Succession, or Similar Peru 1997 11 12
Ratification, Accession, Succession, or Similar Philippines 2001 2 23
Ratification, Accession, Succession, or Similar Poland 1999 5 25
Ratification, Accession, Succession, or Similar Portugal 2000 6 26
Ratification, Accession, Succession, or Similar Qatar 1997 3 3
Ratification, Accession, Succession, or Similar Romania 1999 10 5
Ratification, Accession, Succession, or Similar Russian Federation 2000 6 30
Ratification, Accession, Succession, or Similar Rwanda 2004 11 30
Ratification, Accession, Succession, or Similar Saint Kitts and Nevis 2005 4 27
Ratification, Accession, Succession, or Similar Saint Lucia 2001 4 5
Ratification, Accession, Succession, or Similar Saint Vincent and the Grenadines 2009 9 23
Ratification, Accession, Succession, or Similar Samoa 2002 9 27
Ratification, Accession, Succession, or Similar San Marino 2002 3 12
Ratification, Accession, Succession, or Similar Sao Tome and Principe 2022 9 22
Ratification, Accession, Succession, or Similar Senegal 1999 6 9
Ratification, Accession, Succession, or Similar Serbia 2004 5 19
Ratification, Accession, Succession, or Similar Seychelles 2004 4 13
Ratification, Accession, Succession, or Similar Sierra Leone 2001 9 17
Ratification, Accession, Succession, or Similar Singapore 2001 11 10
Ratification, Accession, Succession, or Similar Slovakia 1998 3 3
Ratification, Accession, Succession, or Similar Slovenia 1999 8 31
Ratification, Accession, Succession, or Similar Solomon Islands 2023 1 20
Ratification, Accession, Succession, or Similar South Africa 1999 3 30
Ratification, Accession, Succession, or Similar Spain 1998 7 31
Ratification, Accession, Succession, or Similar Sudan 2004 6 10
Ratification, Accession, Succession, or Similar Suriname 2006 2 7
Ratification, Accession, Succession, or Similar Sweden 1998 12 2
Ratification, Accession, Succession, or Similar Switzerland 1999 10 1
Ratification, Accession, Succession, or Similar Tajikistan 1998 6 10
Ratification, Accession, Succession, or Similar Tanzania 2004 9 30
Ratification, Accession, Succession, or Similar Thailand 2018 9 25
Ratification, Accession, Succession, or Similar Timor-Leste 2022 8 1
Ratification, Accession, Succession, or Similar Togo 2004 7 2
Ratification, Accession, Succession, or Similar Trinidad and Tobago 2010 5 26
Ratification, Accession, Succession, or Similar Tunisia 2004 9 23
Ratification, Accession, Succession, or Similar Türkiye 2000 2 16
Ratification, Accession, Succession, or Similar Turkmenistan 1998 2 20
Ratification, Accession, Succession, or Similar Tuvalu 2022 3 31
Ratification, Accession, Succession, or Similar Uganda 2001 3 14
Ratification, Accession, Succession, or Similar Ukraine 2001 2 23
Ratification, Accession, Succession, or Similar United Arab Emirates 2000 9 18
Ratification, Accession, Succession, or Similar United Kingdom 1998 4 6
Ratification, Accession, Succession, or Similar Uruguay 2001 9 21
Ratification, Accession, Succession, or Similar Uzbekistan 1997 5 29
Ratification, Accession, Succession, or Similar Vanuatu 2005 9 16
Ratification, Accession, Succession, or Similar Venezuela 2002 5 13
Ratification, Accession, Succession, or Similar Viet Nam 2006 3 10
Ratification, Accession, Succession, or Similar Zambia 2006 2 23
Ratification, Accession, Succession, or Similar Zimbabwe 2019 2 13

Pages

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).