Prominent research holds that the use of weapons of mass destruction is taboo. But how strong are these norms? Investigating this question among the mass public, we argue that some citizens actually support taboo policies in private but are unwilling to express counter-normative opinions openly due to fear of social sanction. These insincere norm-holders are difficult to identify empirically because

Why do some immigrant groups succeed in influencing the U.S. government to impose economic sanctions on their former dictators, while others do not? This paper begins by noting that the president is the pivotal player in sanctions policy and that presidents cater to voters in swing states. Therefore, a diaspora’s proportion of the swing-state electorate should determine whether the American government

We reconsider the relationship between oil and conflict, focusing on the location of oil resources. In a panel of 132 countries over the period 1962-2009, we show that oil windfalls escalate conflict in onshore-rich countries, while they de-escalate conflict in offshore-rich countries. We use a model to illustrate how these opposite effects can be explained by a fighting capacity mechanism, whereby

Existing measures of human rights abuses are often only available at the country-year level. Several more fine-grained measures exhibit spatio-temporal inaccuracies or reporting biases due to the primary sources upon which they rely. To address these challenges, and to increase the diversity of available human rights measures more generally, this study provides the first quantitative effort to measure

How have understandings of fundamental norms of international society changed over time? How does this relate to the decline of interstate violence since 1945? Previous explanations have focused on regime type, domestic institutions, economic interdependence, relative power, and nuclear weapons, I argue that a crucial and underexplored part of the puzzle is the change in understanding of sovereignty

States signal their intentions to domestic and foreign audiences but are not always believed. Why do people believe some state signals but not others? Using a survey experiment on a representative sample of the US public, this study finds that individuals have a negativity bias when assessing the credibility of state signals. They take other states’ aggressive actions as evidence of deep hostility

Scholars of civil wars have long argued that non-state actors can use selective punishment to reduce collaboration with state adversaries. However, there is little systematic evidence confirming this claim, nor investigation into the mechanisms at play. In this paper, we provide such evidence from the drone war in Pakistan. Militants in Pakistan’s tribal areas engaged in a brutal counterespionage campaign

How do concerns about fairness shape foreign policy preferences? In this article, we show that fairness has two faces—one concerning equity, the other concerning equality—and that taking both into account can shed light on the structure of important foreign policy debates. Fielding an original survey on a national sample of Americans, we show that different types of Americans think about fairness in

Cremin MR, Popescu BG. Sticks and Stones? Connecting Insurgent Propaganda with Violent Outcomes. Journal of Conflict Resolution. July 2021. doi:10.1177/00220027211027291

International organizations face a trade-off between the need to replace poorly performing leaders and the imperative of preserving the loyalty of influential or pivotal member states. This performance-politics dilemma is particularly acute in UN peacekeeping. Leaders of peacekeeping operations are responsible for ensuring that peacekeepers implement mandates, maintain discipline, and stay safe. Yet

How does dual-use technology influence cooperation? This study explores how the development of nuclear latency (the technological precursors to nuclear weapons) affects U.S. cooperative overtures toward its possessors. We argue that the ambiguous nature of nuclear latency creates uncertainty about the intentions of its possessors and impacts cooperation. Using event data, we find that a state’s possession

An American’s yearly chance of being killed by a terrorist attack sits at roughly 1 in 3.5 million. Yet, over 40 percent of Americans consistently believe that they or their family members are likely to be a terror victim. Can these inflated estimates of the risks of terrorism be brought closer to reality? With trillions of dollars spent on the “War on Terror,” this question is not just theoretically

International climate negotiations occur against the backdrop of increasing collective risk: the likelihood of catastrophic economic loss due to climate change will continue to increase unless and until global mitigation efforts are sufficient to prevent it. We introduce a novel alternating-offers bargaining model that incorporates this characteristic feature of climate change. We test the model using

We examine the research protocols in Blair and Sambanis’ recent article on forecasting civil wars, where they argue that their theory-based model can predict civil war onsets better than several atheoretical alternatives or a model with country-structural factors. We find that there are several important mistakes and that their key finding is entirely conditional on the use of parametrically smoothed

Multinational military exercises are among the most notable demonstrations of military cooperation and intent. On average, one is initiated every 8.9 days. But it has often been argued that joint military exercises (JMEs) increase the risk of war. Using a relational contracting approach, we claim that formal military alliances mediate the effect of JMEs. Exercises and alliances serve complementary

Beger, Morgan, and Ward (BM&W) call into question the results of our article on forecasting civil wars. They claim that our theoretically-informed model of conflict escalation under-performs more mechanical, inductive alternatives. This claim is false. BM&W’s critiques are misguided or inconsequential, and their conclusions hinge on a minor technical question regarding receiver operating characteristic

Instead of attacking their adversaries directly, states often do so indirectly by supporting rebel groups. While these support relationships vary considerably, existing research lacks a comprehensive account thereof. To explain states’ choice of support, we suggest differentiating between two modes of support relationships according to the control opportunities they offer states over rebels: while

What is the relationship between natural resources and rebel governance? Previous studies have argued that resource rich groups have fewer incentives to provide social services. We argue, however, that even well-funded rebels may have incentives to provide some social services to civilians. Specifically, rebel groups profiting from the extraction of natural resources should be more likely to offer

In this paper, we analyze the relationship between ISIS propaganda content and ISIS-inspired attacks by those outside of the group’s control. We examine the content of ISIS’ English language magazines, as well as speeches by two of its top leaders. We find that statements made about enemy countries in most contexts are not associated with a higher likelihood of violence in those countries. However

This article introduces the Deadly Electoral Conflict dataset (DECO): a global, georeferenced event dataset on electoral violence with lethal outcomes from 1989 to 2017. DECO allows for empirical evaluation of theories relating to the timing, location, and dynamics of deadly electoral violence. By clearly distinguishing electoral violence from related (and sometimes concurrent) instances of organized

Ostensibly bilateral US foreign policy actions, such as sanctions, can influence third-party compliance with US policy preferences. US sanctions simultaneously signal US preferences and demonstrate leverage, which can motivate third parties to avoid or change proscribed behavior proactively. Empirical testing of this strategic behavior typically is difficult given that it predicts non-events in a noisy

Among security institutions, police occupy a unique position. In addition to specializing in the repression of dissent, police monitor society and enforce order. Yet within research studying state repression, how police institutions are used and deployed to control domestic threats remain under-explored, particularly as it relates to the dual functionality just described. In this study, we develop

We examine the political consequence of exposure to widely available video content of terror violence. In a two-wave survey of Americans, we assess who is exposed to, and seeks out, terror-related video content in the first wave and then observe who decides to watch raw video footage of the Boston marathon terror attack in the second. We focus centrally on anxiety and anger as differing emotional reactions

How does violence during civil war shape citizens’ willingness to trust and rely on state security providers in the post-conflict period? Can post-conflict security sector reform restore perceptions of state security forces among victims of wartime state predation? Using a survey and field experiment in Liberia, we show that rebel-perpetrated violence is strongly positively correlated with trust and

What is the legacy of war, violence, and displacement on altruism toward diverse populations suffering similar hardships today? Prior research suggests these hardships have the potential to increase empathy that can in turn motivate altruism across identity boundaries. We test this hypothesis using survey data collected in 2017 from over 2,000 Syrians living in rebel-held regions where many internally

What are the effects of state repression on public perceptions of police? And to what extent are these effects uniform or conditional on individuals’ loyalty to political authorities? I argue that repression by the police negatively affects how people evaluate the police, especially among those who do not support the ruling party. People who oppose the regime are more likely to fear the police following

The police are often key actors in conflict processes, yet there is little research on their role in the production of political violence. Previous research provides us with a limited understanding of the part the police play in preventing or mitigating the onset or escalation of conflict, in patterns of repression and resistance during conflict, and in the durability of peace after conflicts are resolved

This article introduces CShapes 2.0, a GIS dataset that maps the borders of states and dependent territories from 1886 through 2019. Our dataset builds on the previous CShapes dataset and improves it in two ways. First, it extends temporal coverage from 1946 back to the year 1886, which followed the Berlin Conference on the partition of Africa. Second, the new dataset is no longer limited to independent

Why do some militant organizations participate in human trafficking? We investigate this question by introducing a new dataset that records insurgent organizations’ involvement in four types of human trafficking: sexual exploitation, forced recruitment, slavery, and kidnapping. Marrying our data to the BAAD2I population of insurgent organizations, we uncover the organizational attributes related to

Sukin, Lauren. 2020. “Credible Nuclear Security Commitments Can Backfire: Explaining Domestic Support for Nuclear Weapons Acquisition in South Korea.” Journal of Conflict Resolution 64 (6): 1011-42. (Original DOI: 10.1177/0022002719888689)

Despite considerable interest and debate, it has proven surprisingly difficult to demonstrate a systematic link between technological change and patterns of war and peace. At least part of the challenge may reside in finding the right place to “look” for such relationships. Technological change alters what nations can do to one another (capabilities), but in ways that are typically reflected by deals

Surveying civil war in the world today is striking in terms of how often religious cleavages and grievances have become central to armed conflict. How are the causes and outcomes of religious civil wars different than other civil wars, if at all? Is Islam implicated for the contemporary surge in religious civil war? The first section reviews the literature and addresses the importance of religion for

Why do some autocracies democratize? A country’s violent past has received little attention. We argue that genocide and politicide undermine democratization by binding the elites’ supporters more tightly to the governing power, while cementing in-group/out-group animosities, and helping preserve the elites’ status quo position within the state. We test this argument on a new dataset of government atrocity

In intractable conflicts, what factors lead populations to accept negotiated outcomes? To examine these issues, we conduct a survey experiment on a representative sample of the Jewish Israeli population and a companion experiment on a representative sample of Palestinians in the West Bank and Gaza. We find that holding the negotiated settlement outcome constant, approval of the settlement is strongly

Policymakers and peacebuilding research often focus on rebel groups when studying demobilization and integration processes, but post-war governments must also manage the non-state militias that helped them gain or maintain power. Why do some post-war governments disintegrate their militia allies, while others integrate them into the military? We argue that when a salient ethnic difference exists between

Reputations for resolve are said to be one of the few things worth fighting for, yet they remain inadequately understood. Discussions of reputation focus almost exclusively on first-order belief change—A stands firm, B updates its beliefs about A’s resolve. Such first-order reputational effects are important, but they are not the whole story. Higher-order beliefs—what A believes about B’s beliefs,

Scholars of civil war and insurgency have long posited that insurgent organizations and their state enemies incur costs for the collateral damage they cause. We provide the first direct quantitative evidence that wartime informing to counterinsurgent forces is affected by civilian victimization. Using newly declassified data on tip flow to Coalition forces in Iraq we find that information flow goes

When do indigenous and other negatively affected populations mobilize against fossil fuel companies? We revisit social movement theory and environmental literature to identify three factors that may plausibly shape mobilization decisions of negatively affected populations—democratic institutions, community perceptions of government shaped by land tenure security, and firm attributes. Democratic institutions

Do radical political demands increase the risk of ethnic civil conflict? And why do ethnic movements make radical demands in the first place? We contend that when movements are fragmented, individual organizations use far-reaching claims relative to the status quo to attract attention from the government, boost intra-organizational discipline, and outbid rivals. Yet, such radical claims also increase

Despite the omnipresence of inter-group conflicts, little is known about the heterogeneity and stability of individuals’ social preferences toward in-group and out-group members. To identify the prevalence and stability of social preferences in inter-group conflict, we gather quota-representative, incentivized data from a lab-in-the-field study during the heated 2016 Austrian presidential election

Governments build walls to curtail a range of illicit activities like immigration, crime, and terrorism. We argue that while physical barriers effectively prevent specific unwanted behavior, they induce actors to respond strategically and develop new tactics, changing the nature of illicit activity and leading to new threats. We test this argument in the context of Israel’s security barrier. Using

Research on rebel behavior during conflicts has traditionally focused on the use of violent tactics. However, evidence from several intrastate wars suggests that armed groups also occasionally employ general strikes—a method of civil resistance that has typically been associated with nonviolent groups. But when do rebels resort to general strikes? I argue that these tactics have a particular function

Our study compares the efficacy of mixed bargaining strategies to strict coercion or accommodation. While mixed strategies can be approached from different conceptual angles, we focus on flexible and/or firm postures as signaling properties of bargaining. In our theory and empirical analysis, we show that the combination of firmness with flexibility on both sides, without necessarily scripted rules

This paper investigates how violence in self-determination conflicts influences bilateral foreign policy. I argue that a general preference for international stability causes third parties to support self-determination groups when violence reaches high levels, when they gain territorial control, and when major powers officially recognize. In these conditions, third parties perceive a stable new status

How do emerging technologies that erode governments’ near-monopolies on intelligence information affect public support for leaders and their foreign policies? Technologies—like imagery satellites—that were once the domain of state governments are now increasingly available to commercial and private actors. As a result, non-government entities can now exercise the disclosure decision, publicly divulging

To meet the rising demand for minerals, mining companies have ventured into fragile areas, often at the expense of artisanal miners. This has led to grievances, and at times violence. Who among the aggrieved intend to use violence? How can peace be maintained? This paper uses individual-level data to address these questions. Among a sample of 469 about-to-be-evicted artisanal miners in Eastern Congo

A wealth of literature argues that domestic institutions can sometimes restrain government repression. In this article, we highlight an institution tasked specifically with protecting and promoting human rights: the National Human Rights Institution (NHRI). Although common international standards exist, NHRIs exhibit substantial variation in their organization, the rights that they protect, the activities

Recent research has directed attention to the transformative potential of war for female empowerment. As a disruptive shock, armed conflict can create a window of opportunity for advancing the societal role of women. We complement this research agenda by looking at how conflict severity and termination condition the outcomes for women in the aftermath of civil conflict. We expect that both level of

Under what conditions can dictatorships manage peaceful leadership transitions? This article argues that constitutional succession rules are critical for modern dictatorships, contrary to the predominant scholarly focus on hereditary succession or parties. An effective succession rule needs to solve dual problems of peaceful exit and peaceful entry. First, the rule must enable incumbents to exit power

Does propaganda reduce the rate of popular protest in autocracies? To answer this question, we draw on an original dataset of state-run newspapers from thirty countries, encompassing six languages and over four million articles. We find that propaganda diminishes the rate of protest, and that its effects persist over time. By increasing the level of pro-regime propaganda by one standard deviation,

Why do states join wartime coalitions despite the absence of a salient threat or strong ties to the coalition leader? We argue states make unexpectedly high contributions to coalition warfare as a costly signal of their desire for a stronger relationship with the coalition leader. Conventional theories insufficiently explain why states without immediate security interests or strong ties to the lead

A number of proposals for reducing tensions with North Korea have discussed alterations to the program of joint military exercises (JMEs) that South Korea holds. North Korea has also repeatedly called for a reduction or secession of JMEs. Would limiting or halting JMEs be a useful concession for securing a reduction of tensions on the peninsula? We argue that JMEs do not deter North Korea but, instead

News reports and policymakers frequently link African civil conflicts and wars to agricultural crises caused by droughts. However, empirical studies of the relationship between rainfall and civil conflict or war remain inconclusive. I reexamine this relationship focusing on rainfall over each country’s agricultural land during the growing seasons. I also incorporate that the relationship between rainfall

Weak state capacity is one of the most important explanations of civil conflict. Yet, current conceptualizations of state capacity typically focus only on the state while ignoring the relational nature of armed conflict. We argue that opportunities for conflict arise where relational state capacity is low, that is, where the state has less control over its subjects than its potential challengers. This

Threats and force, by increasing expected costs, should reduce the target’s resolve. However, they often seem to increase resolve. We label this phenomenon provocation. We review instances of apparent provocation in interstate relations and offer a theory based on the logic of reputation and honor. We also consider alternative explanations: confounding or mis-imputation of resolve; revelation of information

Presidents have significant incentives to mislead the public about the use of force. Under what conditions are members of the public willing to hold presidents accountable for what they say about military action? This article examines both spin and deceit at the micro-level to clarify when individuals are most likely to punish presidents for misinformation. Three survey experiments demonstrate that

This article develops a spatial model of internal and external forced migration. We propose a model reminiscent of Hotelling’s spatial model in economics and Schelling’s model of segregation. Conflict is modeled as a shock that hits a country at certain location and generates displacement of people located near the shock’s location. Some displaced people cross a border, thus becoming refugees, while

The US engages in extensive training and education of foreign militaries, often through exchange programs carried out at the different military services’ staff and war colleges. Researchers have recently explored the way in which military training can affect civil-military relations in the host country, but not much work has studied whether military training actually leads to increased US influence

Do human rights organizations (HROs) aid the consolidation of democracy in post-authoritarian states? It is often argued that these groups contribute to accountability for past repression. Yet HROs...

This study argues that the effect of third-party trade on dyadic conflicts is conditional on the naval power of both the potential conflict initiator and its target state. This conditional effect occurs mainly because naval power allows trade-integrated initiators to reduce their trade dependence on a given trade partner and its allies more easily. At the same time, the target’s naval power increases