Action 8507

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Membership Information for: Treaty on the Prohibition of Nuclear Weapons

Signed: 2017-07-07; Entered into force: 2021-01-22; Terminated:
Source for membership data: https://treaties.unoda.org/t/tpnw
Date of last download from source: 2022-12-05
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 United Nations website. For inaccuracies, please notify the Project Director.
Agreement Action Country Year Month Day Edit link
Entry Into Force Namibia 2021 1 22
Entry Into Force Nauru 2021 1 22
Entry Into Force New Zealand 2021 1 22
Entry Into Force Nicaragua 2021 1 22
Entry Into Force Nigeria 2021 1 22
Entry Into Force Niue 2021 1 22
Entry Into Force Palau 2021 1 22
Entry Into Force Palestine, Occupied Territories 2021 1 22
Entry Into Force Panama 2021 1 22
Entry Into Force Paraguay 2021 1 22
Entry Into Force Peru 2022 3 23
Entry Into Force Philippines 2021 5 19
Entry Into Force Saint Kitts and Nevis 2021 1 22
Entry Into Force Saint Lucia 2021 1 22
Entry Into Force Saint Vincent and the Grenadines 2021 1 22
Entry Into Force Samoa 2021 1 22
Entry Into Force San Marino 2021 1 22
Entry Into Force Seychelles 2021 10 7
Entry Into Force South Africa 2021 1 22
Entry Into Force Thailand 2021 1 22
Entry Into Force Timor-Leste 2022 9 18
Entry Into Force Trinidad and Tobago 2021 1 22
Entry Into Force Tuvalu 2021 1 22
Entry Into Force Uruguay 2021 1 22
Entry Into Force Vanuatu 2021 1 22
Entry Into Force Venezuela 2021 1 22
Entry Into Force Viet Nam 2021 1 22

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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).