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Climate Refugee or Conflict Refugee? Why 'Complex Displacement' Demands a New Framework
A family fleeing a flood that was worsened by climate change, in a region already destabilized by armed conflict, does not fit neatly into any single category of displacement. See, Opdyke, and Banki (2025) argue that climate, disaster, and conflict interact as compound triggers—and that existing humanitarian frameworks are not built for this reality.
By Sean K.S. Shin
This blog summarizes research trends based on published paper abstracts. Specific numbers or findings may contain inaccuracies. For scholarly rigor, always consult the original papers cited in each post.
Disclaimer: This post is a research trend overview for informational purposes. Specific findings, statistics, and claims should be verified against the original papers before citation in academic work.
Climate Refugee or Conflict Refugee? Why 'Complex Displacement' Demands a New Framework
Consider a farmer in the Sahel. Drought has destroyed two consecutive harvests. Armed groups, partly drawn to the region by competition over diminishing resources, have made the village unsafe. A flood—intensified by deforestation linked to the conflict—destroys what remains. The farmer leaves. Is this climate displacement? Conflict displacement? Disaster displacement?
The honest answer is that it is all three, simultaneously—and that the categories themselves may be the problem. See, Opdyke, and Banki (2025), writing in Climate and Development, propose the concept of "complex displacement" to describe situations where climate change, disaster, and conflict operate not as independent causes but as mutually reinforcing triggers.
The Research Landscape
Displacement research has traditionally organized itself around discrete drivers. The refugee law framework, anchored in the 1951 Convention, addresses persecution and conflict. Disaster risk reduction frameworks address natural hazards. Climate migration research addresses slow-onset environmental change. Each tradition has developed its own concepts, institutions, and protection mechanisms.
This compartmentalization made sense when the drivers were reasonably separable. A person fleeing a civil war could be distinguished from a person fleeing an earthquake. But See et al. (2025) argue that the drivers increasingly interact. Climate change intensifies disasters (more severe storms, longer droughts). Resource scarcity fueled by environmental change may exacerbate conflict. Conflict degrades the infrastructure and governance capacity that might otherwise support disaster response. The result is displacement driven by compound, interacting causes rather than a single identifiable trigger.
The paper conceptualizes these three forces—climate change, disaster, and conflict—as interacting triggers that mutually reinforce one another. Rather than operating independently along separate causal pathways, they combine to produce displacement situations that are qualitatively different from what any single driver would produce alone.
Critical Analysis
The concept of complex displacement addresses a genuine gap in both research and practice. But it also raises questions about analytical precision and operational utility.
<
| Claim | Source | Strength | Limitation |
|---|
| Climate change, disaster, and conflict function as interacting triggers of displacement, not independent causes | See, Opdyke & Banki, 2025 | Captures real-world dynamics where displacement drivers compound; aligns with lived experience in affected regions | Interaction effects are conceptually compelling but methodologically challenging to isolate; causal attribution becomes more difficult, not less |
| These three drivers mutually reinforce rather than operate independently | See, Opdyke & Banki, 2025 | Moves beyond linear cause-effect models toward systems thinking about displacement | The mutual reinforcement claim needs empirical specification: under what conditions do these drivers amplify each other, and when do they operate independently? |
| Existing humanitarian protection frameworks have significant limitations for compound displacement situations | See, Opdyke & Banki, 2025 | Identifies a critical institutional gap; current legal categories were designed for single-driver displacement | Diagnosing the limitation is necessary but not sufficient; the paper illuminates what does not work more clearly than what would |
The analytical challenge here is not trivial. When three causal processes interact, the number of possible causal pathways multiplies. Climate change may drive conflict, or conflict may exacerbate climate vulnerability, or both may independently increase disaster risk while also amplifying each other's effects. Mapping these interactions requires not only interdisciplinary research but also methodological tools capable of modeling feedback loops and nonlinear dynamics.
The protection gap the paper identifies is particularly concerning. The 1951 Refugee Convention was designed for a world of discrete persecutions by identifiable state or non-state actors. Disaster displacement frameworks (such as the Nansen Initiative's Protection Agenda) were designed for identifiable hazard events. Climate migration frameworks are still evolving and lack binding legal force. A person displaced by the interaction of all three falls through the gaps between these frameworks—recognized by none of them as their specific concern.
See et al. (2025) review these limitations, arguing that the compound nature of complex displacement exposes the inadequacy of frameworks built around single-driver categories. The implication is not merely academic: it determines whether displaced people receive legal protection, humanitarian assistance, and the right to remain in a host country.
Open Questions
Definitional boundaries: If displacement is "complex" when multiple drivers interact, how much interaction is required before the label applies? Is a drought-driven migration that occurs in a country with an ongoing low-intensity conflict automatically "complex"? Without clearer criteria, the concept may become so broad as to describe most displacement in vulnerable regions.
Causal attribution and responsibility: Single-driver frameworks, despite their limitations, had the advantage of assigning responsibility. Conflict displacement points to armed actors. Disaster displacement points to hazard governance. Climate displacement, however contested, points to emissions responsibility. When all three interact, the question of who bears responsibility—and therefore who provides protection—becomes significantly more complex.
Institutional reform or new institutions: The paper documents the limitations of existing protection frameworks. But the reform question is open: should existing frameworks be expanded to cover compound situations, or does complex displacement require entirely new institutional architecture? The former is more politically feasible; the latter may be more analytically coherent.
Data and measurement: How should complex displacement be counted? Current displacement statistics (from UNHCR, IDMC, and others) typically categorize by primary cause. If a displacement event is driven by interacting causes, it may be counted under one category while the others are invisible in the data. This has implications for resource allocation, policy attention, and academic research priorities.
Closing
The concept of complex displacement does not make the world messier—the world is already messy. What it does is resist the analytical temptation to impose clean categories on situations that refuse them. The Sahel farmer fleeing drought, conflict, and flood simultaneously is not an edge case; in an era of accelerating climate change and persistent fragility, this kind of compound displacement may become the norm rather than the exception.
See, Opdyke, and Banki's contribution is to name this phenomenon and to document the inadequacy of frameworks designed for a simpler world. The harder work—building protection mechanisms that match the complexity of the displacement they are meant to address—remains ahead. But it cannot begin without first acknowledging that the old categories no longer hold.
Disclaimer: This post is a research trend overview for informational purposes. Specific findings, statistics, and claims should be verified against the original papers before citation in academic work.
Climate Refugee or Conflict Refugee? Why 'Complex Displacement' Demands a New Framework
Consider a farmer in the Sahel. Drought has destroyed two consecutive harvests. Armed groups, partly drawn to the region by competition over diminishing resources, have made the village unsafe. A flood—intensified by deforestation linked to the conflict—destroys what remains. The farmer leaves. Is this climate displacement? Conflict displacement? Disaster displacement?
The honest answer is that it is all three, simultaneously—and that the categories themselves may be the problem. See, Opdyke, and Banki (2025), writing in Climate and Development, propose the concept of "complex displacement" to describe situations where climate change, disaster, and conflict operate not as independent causes but as mutually reinforcing triggers.
The Research Landscape
Displacement research has traditionally organized itself around discrete drivers. The refugee law framework, anchored in the 1951 Convention, addresses persecution and conflict. Disaster risk reduction frameworks address natural hazards. Climate migration research addresses slow-onset environmental change. Each tradition has developed its own concepts, institutions, and protection mechanisms.
This compartmentalization made sense when the drivers were reasonably separable. A person fleeing a civil war could be distinguished from a person fleeing an earthquake. But See et al. (2025) argue that the drivers increasingly interact. Climate change intensifies disasters (more severe storms, longer droughts). Resource scarcity fueled by environmental change may exacerbate conflict. Conflict degrades the infrastructure and governance capacity that might otherwise support disaster response. The result is displacement driven by compound, interacting causes rather than a single identifiable trigger.
The paper conceptualizes these three forces—climate change, disaster, and conflict—as interacting triggers that mutually reinforce one another. Rather than operating independently along separate causal pathways, they combine to produce displacement situations that are qualitatively different from what any single driver would produce alone.
Critical Analysis
The concept of complex displacement addresses a genuine gap in both research and practice. But it also raises questions about analytical precision and operational utility.
<
| Claim | Source | Strength | Limitation |
|---|
| Climate change, disaster, and conflict function as interacting triggers of displacement, not independent causes | See, Opdyke & Banki, 2025 | Captures real-world dynamics where displacement drivers compound; aligns with lived experience in affected regions | Interaction effects are conceptually compelling but methodologically challenging to isolate; causal attribution becomes more difficult, not less |
| These three drivers mutually reinforce rather than operate independently | See, Opdyke & Banki, 2025 | Moves beyond linear cause-effect models toward systems thinking about displacement | The mutual reinforcement claim needs empirical specification: under what conditions do these drivers amplify each other, and when do they operate independently? |
| Existing humanitarian protection frameworks have significant limitations for compound displacement situations | See, Opdyke & Banki, 2025 | Identifies a critical institutional gap; current legal categories were designed for single-driver displacement | Diagnosing the limitation is necessary but not sufficient; the paper illuminates what does not work more clearly than what would |
The analytical challenge here is not trivial. When three causal processes interact, the number of possible causal pathways multiplies. Climate change may drive conflict, or conflict may exacerbate climate vulnerability, or both may independently increase disaster risk while also amplifying each other's effects. Mapping these interactions requires not only interdisciplinary research but also methodological tools capable of modeling feedback loops and nonlinear dynamics.
The protection gap the paper identifies is particularly concerning. The 1951 Refugee Convention was designed for a world of discrete persecutions by identifiable state or non-state actors. Disaster displacement frameworks (such as the Nansen Initiative's Protection Agenda) were designed for identifiable hazard events. Climate migration frameworks are still evolving and lack binding legal force. A person displaced by the interaction of all three falls through the gaps between these frameworks—recognized by none of them as their specific concern.
See et al. (2025) review these limitations, arguing that the compound nature of complex displacement exposes the inadequacy of frameworks built around single-driver categories. The implication is not merely academic: it determines whether displaced people receive legal protection, humanitarian assistance, and the right to remain in a host country.
Open Questions
Definitional boundaries: If displacement is "complex" when multiple drivers interact, how much interaction is required before the label applies? Is a drought-driven migration that occurs in a country with an ongoing low-intensity conflict automatically "complex"? Without clearer criteria, the concept may become so broad as to describe most displacement in vulnerable regions.
Causal attribution and responsibility: Single-driver frameworks, despite their limitations, had the advantage of assigning responsibility. Conflict displacement points to armed actors. Disaster displacement points to hazard governance. Climate displacement, however contested, points to emissions responsibility. When all three interact, the question of who bears responsibility—and therefore who provides protection—becomes significantly more complex.
Institutional reform or new institutions: The paper documents the limitations of existing protection frameworks. But the reform question is open: should existing frameworks be expanded to cover compound situations, or does complex displacement require entirely new institutional architecture? The former is more politically feasible; the latter may be more analytically coherent.
Data and measurement: How should complex displacement be counted? Current displacement statistics (from UNHCR, IDMC, and others) typically categorize by primary cause. If a displacement event is driven by interacting causes, it may be counted under one category while the others are invisible in the data. This has implications for resource allocation, policy attention, and academic research priorities.
Closing
The concept of complex displacement does not make the world messier—the world is already messy. What it does is resist the analytical temptation to impose clean categories on situations that refuse them. The Sahel farmer fleeing drought, conflict, and flood simultaneously is not an edge case; in an era of accelerating climate change and persistent fragility, this kind of compound displacement may become the norm rather than the exception.
See, Opdyke, and Banki's contribution is to name this phenomenon and to document the inadequacy of frameworks designed for a simpler world. The harder work—building protection mechanisms that match the complexity of the displacement they are meant to address—remains ahead. But it cannot begin without first acknowledging that the old categories no longer hold.