Data

States involved in state-based conflicts

See all data and research on:

What you should know about this indicator

'1' indicates that the state participated in a conflict. '0' indicates that the state did not participate in a conflict.

States involved in state-based conflicts
State was a primary participant in at least one interstate, intrastate, or extrasystemic conflict that year.
Source
Uppsala Conflict Data Program and Peace Research Institute Oslo (2023) – processed by Our World in Data
Last updated
September 21, 2023
Date range
1946–2022

Sources and processing

This data is based on the following sources

This dataset is UCDP's most disaggregated dataset, covering individual events of organized violence (phenomena of lethal violence occurring at a given time and place). These events are sufficiently fine-grained to be geo-coded down to the level of individual villages, with temporal durations disaggregated to single, individual days.

You can find more notes at https://web.archive.org/web/20230618115833/https://ucdp.uu.se/downloads/ged/ged231.pdf

Retrieved on
September 21, 2023
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.
Davies, Shawn, Therese Pettersson & Magnus Öberg (2023). Organized violence 1989-2022 and the return of conflicts between states?. Journal of Peace Research 60(4).
Sundberg, Ralph, and Erik Melander, 2013, “Introducing the UCDP Georeferenced Event Dataset”, Journal of Peace Research, vol.50, no.4, 523-532

A conflict-year dataset with information on armed conflict where at least one party is the government of a state in the time period 1946-2022.

You can find more notes at https://web.archive.org/web/20230624120457/https://ucdp.uu.se/downloads/ucdpprio/ucdp-prio-acd-231.pdf

Retrieved on
September 21, 2023
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.
Davies, Shawn, Therese Pettersson & Magnus Öberg (2023). Organized violence 1989-2022 and the return of conflicts between states?. Journal of Peace Research 60(4)
Gleditsch, Nils Petter, Peter Wallensteen, Mikael Eriksson, Margareta Sollenberg, and Håvard Strand (2002) Armed Conflict 1946-2001: A New Dataset. Journal of Peace Research 39(5).

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

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: States involved in state-based conflicts”, part of the following publication: Bastian Herre, Lucas Rodés-Guirao, Max Roser, Joe Hasell and Bobbie Macdonald (2024) - “War and Peace”. Data adapted from Uppsala Conflict Data Program, Uppsala Conflict Data Program and Peace Research Institute Oslo. Retrieved from https://ourworldindata.org/grapher/states-involved-in-state-based-conflicts [online resource]
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:

Uppsala Conflict Data Program and Peace Research Institute Oslo (2023) – processed by Our World in Data

Full citation

Uppsala Conflict Data Program and Peace Research Institute Oslo (2023) – processed by Our World in Data. “States involved in state-based conflicts” [dataset]. Uppsala Conflict Data Program, “Georeferenced Event Dataset v23.1”; Uppsala Conflict Data Program and Peace Research Institute Oslo, “Armed Conflict version 23.1” [original data]. Retrieved July 21, 2024 from https://ourworldindata.org/grapher/states-involved-in-state-based-conflicts