The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Organized violence, 1989–2018 and peace agreements
Abstract
This article reports on trends in organized violence and peace agreements collected by the Uppsala Conflict Data Program (UCDP). The number of fatalities in organized violence decreased for the fourth consecutive year, to reach the lowest level since 2012. In 2018, UCDP recorded almost 76,000 deaths: a decrease of 20% compared to 2017, and 43% compared to the latest peak in 2014. State-based armed conflict drives this downward trend in organized violence, with Syria accounting for much of the change. The number of civilians killed in one-sided violence also dropped in 2018, reaching its lowest level since 2012. In contrast, non-state conflict remained on a high level. The general decline in fatalities from organized violence does not correspond with the trend in the number of active conflicts. In fact, the world has seen a new peak in the number of conflicts after 2014, matched only by the number of conflicts in the early 1990s. In 1991, the peak in the number of armed conflicts corresponded with a similar peak in the number of signed peace agreements. This was followed by a decrease in the number of conflicts in the late 1990s and early 2000s. However, the most recent rise in armed conflicts has not been matched by a similar rise in the number of peace agreements. Two circumstances that characterize the recent rise in conflicts have also been found to make conflicts harder to solve: explicit religious claims and high levels of internationalization.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Winning the war on war: the decline of armed conflict worldwide
(2012) · Choice Reviews Online · doi:10.5860/choice.49-5927 · Cited by 398
Explaining the Severity of Civil Wars
Lacina, B. (2006) · Journal of Conflict Resolution · doi:10.1177/0022002705284828 · Cited by 397
Armed Conflict and Peace Agreements
Harbom, L., Högbladh, S., & Wallensteen, P. (2006) · Journal of Peace Research · doi:10.1177/0022343306067613 · Cited by 297
Self-citationThird-Party Intervention and the Civil War Process
Balch-Lindsay, D., Enterline, A. J., & Joyce, K. A. (2008) · Journal of Peace Research · doi:10.1177/0022343308088815 · Cited by 236
Pettersson, T., & Eck, K. (2018) · Journal of Peace Research · doi:10.1177/0022343318784101 · Cited by 197
Self-citationGovernments, Informal Links to Militias, and Accountability
Carey, S. C., Colaresi, M. P., & Mitchell, N. J. (2015) · Journal of Conflict Resolution · doi:10.1177/0022002715576747 · Cited by 191
Svensson, I. (2007) · Journal of Conflict Resolution · doi:10.1177/0022002707306812 · Cited by 173
Cited by
Pettersson, T., & Öberg, M. (2020) · Journal of Peace Research · doi:10.1177/0022343320934986 · Cited by 291
Self-citationStein, J., Niemeyer, H., Meyer, C., Wirz, C., Eiling, A., Gruzman, R., Heeke, C., Stammel, N., & Knaevelsrud, C. (2021) · Journal of Affective Disorders · doi:10.1016/j.jad.2021.06.042 · Cited by 18
Lessons Learned From Helping Babies Survive in Humanitarian Settings
Amsalu, R., Schulte-Hillen, C., Garcia, D. M., Lafferty, N., Morris, C. N., Gee, S., Akseer, N., Scudder, E., Sami, S., Barasa, S. O., et al. (2020) · Pediatrics · doi:10.1542/peds.2020-016915l · Cited by 14
Civil Society Under Attack: The Consequences for Horizontal Accountability Institutions
Smidt, H., Johansson, J., & Richter, T. (2025) · Studies in Comparative International Development · doi:10.1007/s12116-023-09423-x · Cited by 14
The Macroeconomic Costs of Conflict
Novta, N., & Pugacheva, E. (2020) · IMF Working Papers · doi:10.5089/9781513547756.001 · Cited by 10
Metadata
- Authors
- Pettersson, T., Högbladh, S., & Öberg, M.
- Venue
- Journal of Peace Research
- Publisher
- Oxford University Press (OUP)
- Published
- 2019-06-03
- Volume
- 56
- Issue
- 4
- Pages
- 589-603
- ISSN
- 0022-3433 (ISSN-L)
- 1460-3578
- OpenAlex
- W2948799449
- Cited by
- 432
- References
- 7
- FWCI
- 156.52
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Organized violence, 1989–2018 and peace agreements. https://app.cochat.ai/papers/10.1177/0022343319856046
- The paper
- Pettersson, T., Högbladh, S., & Öberg, M. (2019). Organized violence, 1989–2018 and peace agreements. Journal of Peace Research. https://doi.org/10.1177/0022343319856046
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.