Action 2866

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Membership Information for: Convention On The Prohibition Of Military Or Any Other Hostile Use Of Environmental Modification Techniques

Signed: 1977-05-18; Entered into force: 1978-10-05; Terminated:
Source for membership data: http://disarmament.un.org/treaties/t/enmod
Date of last download from source: 2023-05-17
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 Department of Disarmament Affairs website. For inaccuracies, please notify the Project Director.
Agreement Action Country Year Month Day Edit link
Entry Into Force Tajikistan 1999 10 12
Entry Into Force Tunisia 1978 10 5
Entry Into Force Ukraine (Soviet period) 1978 10 5
Entry Into Force United Kingdom 1978 10 5
Entry Into Force United States 1980 1 17
Entry Into Force Uruguay 1993 9 16
Entry Into Force Uzbekistan 1993 5 26
Entry Into Force Viet Nam 1980 8 26
Entry Into Force Yemen, Arab Republic 1978 10 5
Entry Into Force Yemen, Democratic 1979 6 12
Withdrawal or Similar Czechia 1993 2 22
Withdrawal or Similar Germany, Former GDR 1990 10 2
Entry Into Force 2 Czechia 1993 2 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).