Idean Salehyan

Refugees and the Spread of Civil War

Certain regions of the world experience more conflict than others. Previous analyses have shown that a civil war in one country significantly increases the likelihood that neighboring states will experience conflict. This finding, however, still remains largely unexplained. We argue that population movements are an important mechanism by which conflict spreads across regions. Refugee flows are not only the consequence of political turmoil—the presence of refugees and displaced populations can also increase the risk of subsequent conflict in host and origin countries. Refugees expand rebel social networks and constitute a negative externality of civil war. Although the vast majority of refugees never directly engage in violence, refugee flows may facilitate the transnational spread of arms, combatants, and ideologies conducive to conflict; they alter the ethnic composition of the state; and they can exacerbate economic competition. We conduct an empirical analysis of the link between refugees and civil conflict since the mid-twentieth century, and we find that the presence of refugees from neighboring countries leads to an increased probability of violence, suggesting that refugees are one important source of conflict diffusion.We would like to thank the participants in the “Resources, Governance Structures, and Civil War†Workshop at the European Consortium for Political Research in Uppsala, Sweden, 13–18 April 2004, for early feedback on previous versions of this article. We would also like to thank Anis Bajrektarevic, Lars-Erik Cederman, David Cunningham, Kristian Berg Harpviken, BA©la Hovy, Sarah Lischer, Monty Marshall, Erik Melander, Will H. Moore, Magnus A–berg, and Michael Ward for providing us with data and helpful comments, as well as Jan Ketil RA¸d for permission to reproduce the map from the program ViewConflicts in Figure 1. Finally, we are grateful for the comments and suggestions of the editors of International Organization and the anonymous reviewers. This research was supported by a grant from the National Science Foundation (SES-0351670).

It Takes Two A Dyadic Analysis of Civil War Duration and Outcome

Theories of conflict emphasize dyadic interaction, yet existing empirical studies of civil war focus largely on state attributes and pay little attention to nonstate antagonists. We recast civil war in a dyadic perspective, and consider how nonstate actor attributes and their relationship to the state influence conflict dynamics. We argue that strong rebels, who pose a military challenge to the government, are likely to lead to short wars and concessions. Conflicts where rebels seem weak can become prolonged if rebels can operate in the periphery so as to defy a government victory yet are not strong enough to extract concessions. Conflicts should be shorter when potential insurgents can rely on alternative political means to violence. We examine these hypotheses in a dyadic analysis of civil war duration and outcomes, using new data on nonstate actors and conflict attributes, finding support for many of our conjectures.

Climate change, rainfall, and social conflict in Africa

Much of the debate over the security implications of climate change revolves around whether changing weather patterns will lead to future conflict. This article addresses whether deviations from normal rainfall patterns affect the propensity for individuals and groups to engage in disruptive activities such as demonstrations, riots, strikes, communal conflict, and anti-government violence. In contrast to much of the environmental security literature, it uses a much broader definition of conflict that includes, but is not limited to, organized rebellion. Using a new database of over 6,000 instances of social conflict over 20 years – the Social Conflict in Africa Database (SCAD) – it examines the effect of deviations from normal rainfall patterns on various types of conflict. The results indicate that rainfall variability has a significant effect on both large-scale and smaller-scale instances of political conflict. Rainfall correlates with civil war and insurgency, although wetter years are more likely to suffer from violent events. Extreme deviations in rainfall – particularly dry and wet years – are associated positively with all types of political conflict, though the relationship is strongest with respect to violent events, which are more responsive to abundant than scarce rainfall. By looking at a broader spectrum of social conflict, rather than limiting the analysis to civil war, we demonstrate a robust relationship between environmental shocks and unrest.

Transnational Rebels: Neighboring States as Sanctuary for Rebel Groups

To what extent do international factors affect domestic conflict processes? How do external conditions affect the states repressive capabilities and the opportunities for opposition groups to mobilize, launch an insurgency, and sustain it? This article argues that because state strength is limited by international boundaries, rebel groups often organize transnationally in order to evade repression. External bases, refugee communities, and characteristics of neighboring states are expected to increase the likelihood of civil war onset and continuation. Importantly, external mobilization is difficult for states to monitor and verify, a factor that exacerbates bargaining problems and increases the probability of armed conflict. These claims are tested through a quantitative analysis of civil conflicts from 1951 to 1999. Results suggest that weak neighbors, rival neighbors, and refugee diasporas contribute to rebellion and that conflicts endure longer when rebels have access to external bases.

Social Conflict in Africa: A New Database

We describe the Social Conflict in Africa Database (SCAD), a new event dataset for conducting research and analysis on various forms of social and political unrest in Africa. SCAD contains information on over 7,200 instances of protests, riots, strikes, government repression, communal violence, and other forms of unrest for 47 African countries from 1990–2010. SCAD includes information on event dates, actors and targets, lethality, georeferenced location information, and other conflict attributes. This article gives an overview of the data collection process, presents descriptive statistics and trends across the continent, and compares SCAD to the widely used Banks event data. We believe that SCAD will be a useful resource for scholars across multiple disciplines as well as for the policy community.

Explaining External Support for Insurgent Groups

Many rebel organizations receive significant assistance from external governments, yet the reasons why some rebels attract foreign support while others do not is poorly understood. We analyze factors determining external support for insurgent groups from a principal-agent perspective. We focus on both the supply side, that is, when states are willing to support insurgent groups in other states, and the demand side, that is, when groups are willing to accept such support, with the conditions that this may entail. We test our hypotheses using new disaggregated data on insurgent groups and foreign support. Our results indicate that external rebel support is influenced by characteristics of the rebel group as well as linkages between rebel groups and actors in other countries. More specifically, we find that external support is more likely for moderately strong groups where support is more likely to be offered and accepted, in the presence of transnational constituencies, international rivalries, and when the government receives foreign support.

The Delegation of War to Rebel Organizations

States in an international dispute sometimes choose to attack their enemies with their own military forces but other times choose to empower domestic insurgent groups. What explains the decision to act through rebel proxies rather than directly engage a rival? Theories and empirical analyses of international conflict have adopted a state-centric bias, ignoring the substitution between direct uses of force and indirect action through rebel organizations. This note examines the decision to delegate conflict to rebels through the lens of principal—agent theory. While states support rebel groups to forgo some of the costs of conflict, they also lose a degree of foreign policy autonomy. Preliminary evidence of conflict delegation is presented, along with a number of empirically testable propositions. Finally, the consequences of delegation from the rebels’ perspective are explored. This framework serves as a starting point for future research on rebel—patron interactions.

Non-state actors in civil wars: A new dataset

This paper introduces the Non-State Actors in Armed Conflict Dataset (NSA), which contains detailed information on the state–rebel group dyads included in the Uppsala Conflict Data Project Dyadic Dataset. Existing quantitative studies generally focus on characteristics of countries and conflicts to examine the duration, severity, outcome and recurrence of civil wars, in ways that often ignore the actors in civil wars. The NSA data provides additional information on the organizations involved in conflict dynamics. We describe the structure of the NSA data and the variables included, provide descriptive statistics of the indicators, and discuss areas for future research on non-state actors to enhance our understanding of conflict processes.

No Shelter Here: Rebel Sanctuaries and International Conflict

Rebel groups often operate across national boundaries, increasing tensions between states and the odds of international conflict. Weak states are incapable of evicting rebels and are unwillingly drawn into international conflicts. Rival states support transnational rebels in order to undermine their opponents and substitute direct hostilities with action through proxies. These claims are tested through a quantitative analysis of militarized interstate disputes (MIDs) since 1945. Results support the claim that rebel sanctuaries across borders increase the probability of an international conflict. Other forms of assistance to rebel groups are also associated with increased hostilities.

External Rebel Sponsorship and Civilian Abuse: A Principal-Agent Analysis of Wartime Atrocities

While some groups work hard to foster collaborative ties with civilians, others engage in egregious abuses and war crimes. We argue that foreign state funding for rebel organizations greatly reduces the incentives of militant groups to the ‘win the hearts and minds’ of civilians because it diminishes the need to collect resources from the population. However, unlike other lucrative resources, foreign funding of rebel groups must be understood in principal-agent terms. Some external principals — namely, democracies and states with strong human rights lobbies — are more concerned with atrocities in the conflict zone than others. Multiple state principals also lead to abuse as no single state can effectively restrain the organization. We test these conjectures with new data on foreign support for rebel groups and data on one-sided violence against civilians. Our results provide support for these hypotheses. Most notably, we find strong evidence that principal characteristics help influence agent actions.