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Status of countries regarding the Treaty on the Prohibition of Nuclear Weapons

See all data and research on:
Nuclear WeaponsWar & Peace

What you should know about this indicator

  • The status "Signed" means that a country accepts a treaty without a legal commitment.
  • The status "Approved" means that the country has legally committed to a treaty.
  • The status "Not signed" means that the country has neither signed nor committed to a treaty.
  • The status "Withdrawn" means that the country has withdrawn from its legal commitment to a treaty.
Status of countries regarding the Treaty on the Prohibition of Nuclear Weapons
The treaty's objective is to stop developing, testing, producing, acquiring, possessing, stockpiling, deploying, using, and threatening nuclear weapons, as well as assisting other countries in these actions. A country's position on a treaty can be , , or .
Source
United Nations Office for Disarmament Affairs (2025) – with major processing by Our World in Data
Last updated
May 15, 2025
Next expected update
May 2026
Date range
2017–2024

Sources and processing

This data is based on the following sources

United Nations Office for Disarmament Affairs – Treaties Database

Since 1978, the United Nations has been publishing the status of multilateral Arms Regulation and Disarmament Agreements, presenting data on signatories, parties of relevant agreements and the texts of the agreements themselves.

Retrieved on
May 15, 2025
Retrieved from
https://treaties.unoda.org/treaties
Citation
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
United Nations Office for Disarmament Affairs - Treaties Database (2024).

Since 1978, the United Nations has been publishing the status of multilateral Arms Regulation and Disarmament Agreements, presenting data on signatories, parties of relevant agreements and the texts of the agreements themselves.

Retrieved on
May 15, 2025
Retrieved from
https://treaties.unoda.org/treaties
Citation
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
United Nations Office for Disarmament Affairs - Treaties Database (2024).

How we process data at Our World in Data

All data and visualizations on Our World in Data rely on data sourced from one or several original data providers. Preparing this original data involves several processing steps. Depending on the data, this can include standardizing country names and world region definitions, converting units, calculating derived indicators such as per capita measures, as well as adding or adapting metadata such as the name or the description given to an indicator.

At the link below you can find a detailed description of the structure of our data pipeline, including links to all the code used to prepare data across Our World in Data.

Read about our data pipeline
Notes on our processing step for this indicator
  • Countries are classified as "Approved" if they have either a "Ratification", "Accession", or "Succession" action (as defined by UNODA).
  • Countries are classified as "Signed" if they only have a "Signatory" action (as defined by UNODA).
  • Countries are classified as "Withdrawn" if they have a "Withdrawal" action (as defined by UNODA).
  • Countries are classified as "Not signed" if they have none of the previous actions.

Reuse this work

  • All data produced by third-party providers and made available by Our World in Data are subject to the license terms from the original providers. Our work would not be possible without the data providers we rely on, so we ask you to always cite them appropriately (see below). This is crucial to allow data providers to continue doing their work, enhancing, maintaining and updating valuable data.
  • All data, visualizations, and code produced by Our World in Data are completely open access under the Creative Commons BY license. You have the permission to use, distribute, and reproduce these in any medium, provided the source and authors are credited.

Citations

How to cite this page

To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:

“Data Page: Status of countries regarding the Treaty on the Prohibition of Nuclear Weapons”, part of the following publication: Bastian Herre, Pablo Rosado, and Max Roser (2024) - “Nuclear Weapons”. Data adapted from United Nations Office for Disarmament Affairs. Retrieved from https://archive.ourworldindata.org/20260304-094028/grapher/prohibition-of-nuclear-weapons.html [online resource] (archived on March 4, 2026).

How to cite this data

In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:

United Nations Office for Disarmament Affairs (2025) – with major processing by Our World in Data

Full citation

United Nations Office for Disarmament Affairs (2025) – with major processing by Our World in Data. “Status of countries regarding the Treaty on the Prohibition of Nuclear Weapons” [dataset]. United Nations Office for Disarmament Affairs, “Treaties Database” [original data]. Retrieved April 4, 2026 from https://archive.ourworldindata.org/20260304-094028/grapher/prohibition-of-nuclear-weapons.html (archived on March 4, 2026).

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Data API

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Data URL (CSV format)
https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.csv?v=1&csvType=full&useColumnShortNames=false
Metadata URL (JSON format)
https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.metadata.json?v=1&csvType=full&useColumnShortNames=false

Code examples

Examples of how to load this data into different data analysis tools.

Excel / Google Sheets
=IMPORTDATA("https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.csv?v=1&csvType=full&useColumnShortNames=false")
Python with Pandas
import pandas as pd
import requests

# Fetch the data.
df = pd.read_csv("https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.csv?v=1&csvType=full&useColumnShortNames=false", storage_options = {'User-Agent': 'Our World In Data data fetch/1.0'})

# Fetch the metadata
metadata = requests.get("https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.metadata.json?v=1&csvType=full&useColumnShortNames=false").json()
R
library(jsonlite)

# Fetch the data
df <- read.csv("https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.csv?v=1&csvType=full&useColumnShortNames=false")

# Fetch the metadata
metadata <- fromJSON("https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.metadata.json?v=1&csvType=full&useColumnShortNames=false")
Stata
import delimited "https://ourworldindata.org/grapher/prohibition-of-nuclear-weapons.csv?v=1&csvType=full&useColumnShortNames=false", encoding("utf-8") clear