Conflict Recurrence Analysis
Also known as: Recurring Civil War Analysis, Conflict Relapse Analysis, Repeated-Conflict Survival Analysis, Conflict Recidivism Analysis
Conflict recurrence analysis studies why and when conflicts that have ended return, treating renewed war as a time-to-event outcome. Most civil wars in recent decades have occurred in countries with a prior war, making recurrence a central puzzle. Using survival and repeated-events models — as in Barbara Walter's (2004) analysis of recurring civil war — researchers model the hazard that a post-conflict country relapses into violence as a function of how the war ended and the underlying conditions, while accounting for the fact that the same country can experience multiple conflict spells.
Key highlights
- Directly models the central empirical fact that prior conflict predicts future conflict.
- Handles censored post-conflict spells and the timing of relapse correctly.
- Repeated-events and frailty models capture countries' differing relapse-proneness.
- Adjudicates between war-legacy and underlying-conditions explanations of recurrence.
Intuition
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How it works
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When to use it
Use conflict recurrence analysis when studying why ended conflicts return, when timing matters, and when data contain censored and repeated post-conflict spells. It is the right framework for evaluating how settlement design, peacekeeping, and structural conditions affect the risk of relapse. It is less suited when recurrence is too rare or spells too few for stable estimation, when distinguishing renewed from continuing conflict is impossible, or when the question is about conflict onset in never-conflicted cases rather than relapse.
Strengths & limitations
- Directly models the central empirical fact that prior conflict predicts future conflict.
- Handles censored post-conflict spells and the timing of relapse correctly.
- Repeated-events and frailty models capture countries' differing relapse-proneness.
- Adjudicates between war-legacy and underlying-conditions explanations of recurrence.
- Coding when a conflict 'ends' and whether a new outbreak is the same or a different war is contested and consequential.
- Unobserved country heterogeneity can bias estimates if not modeled.
- Selection into how wars end confounds the effect of settlement type on recurrence.
- Few post-conflict cases constrain model complexity and power.
Common pitfalls
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Applications
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Frequently asked
Why is conflict recurrence analyzed with survival models?
Because recurrence is a time-to-event outcome with censoring: many post-conflict countries have not relapsed by the end of observation, so we know only that their peace has lasted at least a certain time. Survival models use both the timing of relapse and the censored spells correctly, and they let the risk of recurrence vary over time — capturing, for instance, that relapse risk is often highest in the early post-war years.
What is a frailty model and why does recurrence need it?
A frailty model is a survival model with a random effect for each unit (here, country) that captures unobserved differences in baseline risk. Recurrence data are repeated events — the same country can relapse several times — and some countries are inherently more relapse-prone for reasons we cannot fully measure. The frailty term absorbs this heterogeneity, preventing it from biasing the estimated effects of observed covariates and accounting for dependence across a country's spells.
How does recurrence analysis differ from peace duration analysis?
They overlap heavily and often use the same data and methods. Peace duration analysis frames the question as how long peace survives; conflict recurrence analysis frames it as whether and when conflict returns, typically emphasizing the repeated-events structure and the puzzle that prior conflict predicts future conflict. The survival-of-peace and failure-into-conflict framings are complementary perspectives on the same post-conflict process.
Sources
- 1.Walter, B. F. (2004). Does conflict beget conflict? Explaining recurring civil war. Journal of Peace Research, 41(3), 371–388.
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Cite this page
ScholarGate. (2026, June 22). Conflict Recurrence Analysis. ScholarGate. https://scholargate.app/international-relations/conflict-recurrence-analysis