Large and rapid power shifts resulting from exogenous economic growth are considered sufficient to cause preventive wars. Yet most large and rapid shifts result from endogenous military investments. We show that when the investment decision is perfectly transparent, peace prevails. Large and rapid power shifts are deterred through the threat of a preventive war. When investments remain undetected, however, states may be tempted to introduce power shifts as a fait accompli. Knowing this, their adversaries may strike preventively even without conclusive evidence of militarization. In fact, the more effective preventive wars are, the more likely they will be launched against states that are not militarizing. Our argument emphasizes the role of imperfect information as a cause of war. It also explains why powerful states may attack weaker targets even with ambiguous evidence of their militarization. We illustrate our theory through an account of the 2003 US-led invasion of Iraq.

Past decades have witnessed a shift in international cooperation toward growing involvement of transnational actors (TNAs), such as nongovernmental organizations, multinational corporations, and philanthropic foundations. This article offers a comprehensive theoretical and empirical account of TNA access to IOs. The analysis builds on a novel data set, covering formal TNA access to 298 organizational bodies from fifty IOs over the time period 1950 to 2010. We identify the most profound patterns in TNA access across time, issue areas, policy functions, and world regions, and statistically test competing explanations of the variation in TNA access. The central results are three-fold. First, the empirical data confirm the existence of a far-reaching institutional transformation of IOs over the past sixty years, pervading all issue areas, policy functions, and world regions. Second, variation in TNA access within and across IOs is mainly explained by a combination of three factors: functional demand for the resources of TNAs, domestic democratic standards in the membership of IOs, and state concerns with national sovereignty. Third, existing research suffers from a selection bias that has led it to overestimate the general importance of a new participatory norm in global governance for the openness of IOs.

A substantial international relations literature addresses the various ways in which international actors, and the norms they promote, influence state behavior. But less attention has been paid to the influence these actors directly exert at the local level, despite the fact that many transnational campaigns promote norms for which individuals—not states—are the primary transgressors. If individuals behave as some states do, publicly embracing international norms only because they expect a financial or reputational benefit from doing so, then the campaigns have not fully succeeded. But when do individuals engage in real behavior change, and when do they simply change the public image they present to the international community? To begin to address this question, I employ a randomized field experiment to evaluate individuals' willingness to make claims that differ from their true normative commitments. I conducted the experiment in the context of an original 2008 opinion survey about female genital mutilation and early marriage, run in rural Kenya. I find that respondents misrepresent their behavior and intentions, and I supplement these findings with an exploration of causal mechanisms through qualitative interviews.

Among scholars, delegation of power to the US president in 1934 is widely believed to have been a necessary requisite for tariff reductions in ensuing years. According to conventional wisdom, delegation to the president sheltered Congress from constituent pressure thereby facilitating the opening of the US economy and the emergence of the United States as a world power. This article suggests a revision to our understanding of just how that occurred. Through a close study of the US tariff schedule between 1928 and 1964, focusing on highly protected products, we examine which products were subject to liberalization and at what time. After 1934, delegation led to a change in trade policy, not because Congress gave up their constitutional prerogative in this domain but because presidents were able to target the potential economic dislocation that derives from import competition to avoid the creation of a congressional majority willing to halt the trade agreements program.

Policy-makers and the electorate assume political executives' life experiences affect their policy choices once in office. Recent international relations work on leaders focuses almost entirely on how political institutions shape leaders' choices rather than on leaders' personal attributes and how they influence policy choices. This article focuses the analytic lens on leaders and their personal backgrounds. We theorize that the prior military background of a leader is an important life experience with direct relevance for how leaders evaluate the utility of using military force. We test several propositions employing a new data set, building on Archigos, that encompasses the life background characteristics of more than 2,500 heads of state from 1875 to 2004. The results show that the leaders most likely to initiate militarized disputes and wars are those with prior military service but no combat experience, as well as former rebels.

If any group of American blue-collar workers has benefited from the growth of trade it is the unionized dockworkers along the US West Coast. Nevertheless, the International Longshore and Warehouse Union (ILWU) representing these workers is vocally opposed to trade liberalization. We examine several competing explanations for this puzzle and evaluate them by tracing the union's stance on trade over several decades. We also use an original survey to compare ILWU affiliates' attitudes on trade with those of nonmembers with otherwise similar characteristics. Consistent with a model of organizational socialization, the data support the hypothesis that ILWU membership affects the members' revealed political opinions; the data are difficult to reconcile with standard theories of international trade. Our findings indicate that the political support for trade depends not just on voters' structural positions in the economy but also on the organizations and networks in which they are embedded.

Creating institutions that effectively manage interstate conflict is a priority for policy-makers. In this article we demonstrate that military allies are well positioned to influence the crisis-bargaining behavior of both challengers and targets in ways that often lead to peace. Through a three-player game-theoretic model, we demonstrate that a target's alliances not only have an effect on the demand that the challenger makes, but also on the behavior of the target. When a target values an alliance highly, an ally's recommendation for settlement can encourage the target to concede to demands without further escalation. Our statistical analysis provides evidence in support of the theoretical finding. Allies can both deter challengers and restrain partners, and as a result, can encourage peaceful behavior not only from adversaries, but from member states as well. Our study thus sheds new light on the role of military alliances as potential conflict management devices.

What causes democratic waves? This article puts forward a theory of institutional waves that focuses on the effects of systemic transformations. It argues that abrupt shifts in the distribution of power among leading states create unique and powerful incentives for sweeping domestic reforms. A variety of statistical tests reveals strong support for the idea that shifts in hegemonic power have shaped waves of democracy, fascism, and communism in the twentieth century, independent of domestic factors or horizontal diffusion. These “hegemonic shocks” produce windows of opportunity for external regime imposition, enable rising powers to rapidly expand networks of trade and patronage, and inspire imitators by credibly revealing hidden information about relative regime effectiveness to foreign audiences. I outline these mechanisms of coercion, influence, and emulation that connect shocks to waves, empirically test their relationship, and illustrate the theory with two case studies—the wave of democratic transitions after World War I, and the fascist wave of the late interwar period. In sum, democracy in the twentieth century cannot be fully understood without examining the effects of hegemonic shocks.

Do international court judgments influence the behavior of actors other than the parties to a dispute? Are international courts agents of policy change or do their judgments merely reflect evolving social and political trends? We develop a theory that specifies the conditions under which international courts can use their interpretive discretion to have system-wide effects. We examine the theory in the context of European Court of Human Rights (ECtHR) rulings on lesbian, gay, bisexual, and transgender (LGBT) issues by creating a new data set that matches these rulings with laws in all Council of Europe (CoE) member states. We also collect data on LGBT policies unaffected by ECtHR judgments to control for the confounding effect of evolving trends in national policies. We find that ECtHR judgments against one country substantially increase the probability of national-level policy change across Europe. The marginal effects of the judgments are especially high where public acceptance of sexual minorities is low, but where national courts can rely on ECtHR precedents to invalidate domestic laws or where the government in power is not ideologically opposed to LGBT equality. We conclude by exploring the implications of our findings for other international courts.

International organizations (IOs) suffuse world politics, but the International Monetary Fund (IMF) stands out as an unusually important IO. My research suggests that IMF lending is systematically biased. Preferential treatment is largely driven by the degree of similarity between beliefs held by IMF officials and key economic policy-makers in the borrowing country. This article describes the IMF's ideational culture as “neoliberal,” and assumes it to be stable during the observation window (1980–2000). The beliefs of top economic policy-makers in borrowing countries, however, vary in terms of their distance from IMF officials' beliefs. When fellow neoliberals control the top economic policy posts the distance between the means of the policy team's beliefs and the IMF narrows; consequently, IMF loans become less onerous, more generous, and less rigorously enforced. I gathered data on the number of conditions and the relative size of loans for 486 programs in the years between 1980 and 2000. I collected data on waivers, which allow countries that have missed binding conditions to continue to access funds, as an indicator for enforcement. I rely on indirect indicators, gleaned from a new data set that contains biographical details of more than 2,000 policy-makers in ninety developing countries, to construct a measure of the proportion of the top policy officials that are fellow neoliberals. The evidence from a battery of statistical tests reveals that as the proportion of neoliberals in the borrowing government increases, IMF deals get comparatively sweeter.

This article argues that immigration policy formation in the United States after 1950 can only be understood in the context of the increasing integration of world markets. Increasing trade openness has exposed firms that rely on immigrant labor to foreign competition and increased the likelihood that these firms fail. Increasing openness by other states to foreign direct investment (FDI) allowed these same firms to move production overseas. Firms' choices to close their doors or to move overseas decrease their need for labor at home, leading them to spend their political capital on issues other than immigration. Their lack of support for open immigration, in turn, allows policymakers to restrict immigration. An examination of voting behavior on immigration in the US Senate shows that the integration of world capital and goods markets has had an important effect on the politics of immigration in the United States and shows little support for existing theories of immigration policy formation. In addition to increasing one's understanding of immigration policy, this article sheds light on how trade openness and firms' choice of production location can affect their preference for other foreign economic policies as well as domestic policies such as labor, welfare, and environmental policies.

Why do some decision makers prefer big multilateral agreements while others prefer cooperation in small clubs? Does enforcement encourage or deter institutional cooperation? We use experiments drawn from behavioral economics and cognitive psychology—along with a substantive survey focused on international trade—to illustrate how two behavioral traits (patience and strategic reasoning) of individuals who play key roles in negotiating and ratifying an international treaty shape their preferences for how treaties are designed and whether they are ratified. Patient subjects were more likely to prefer treaties with larger numbers of countries (and larger long-term benefits), as were subjects with the skill to anticipate how others will respond over multiple iterations of strategic games. The presence of an enforcement mechanism increased subjects' willingness to ratify treaties; however, strategic reasoning had double the effect of adding enforcement to a trade agreement: more strategic subjects were particularly likely to favor ratifying the agreement. We report these results for a sample of 509 university students and also show how similar patterns are revealed in a unique sample of ninety-two actual US policy elites. Under some conditions certain types of university student convenience samples can be useful for revealing elite-dominated policy preferences—different types of people in the same situation may prefer to approach decision-making tasks and reason through trade-offs in materially different ways.

This article argues that when democracy is not yet institutionalized, leaders have little incentive to push for clean elections, in part because they are likely to face accusations of fraud from domestic opposition groups regardless of their true behavior. Reputable international election observers can facilitate self-enforcing democracy by providing credible information about the quality of elections, thus increasing citizens’ ability to coordinate against the regime when election fraud occurs, and discrediting “sore loser” protests. Patterns of postelection protests are consistent with the argument, including that postelection protests are more likely and last longer following negative reports from international observers. International election observers help promote democracy by making postelection protest more accurate in the short term, thereby increasing incentives for leaders to hold democratic elections in the long term.

Scholars have long debated the causal impact of international institutions such as the World Trade Organization or the International Monetary Fund. This study investigates Organization of Petroleum Exporting Countries (OPEC), an organization that purports to have significant influence over the market for the world's most important commodity–petroleum. Using four empirical tests, I find that OPEC has little or no impact on its members' production levels. These findings prompt the question of why so many people, including scholars, believe in OPEC's influence over the world's oil supply. The idea of OPEC as a cartel is a “rational myth” that supports the organization's true principal function, which is to generate political benefits for its members. One benefit it generates is international prestige. I test this idea using data on diplomatic representation and find that OPEC membership is associated with increased international recognition by other states. Overall, these findings help one to better understand international regimes and the process of ideational change in world politics.

Scholars of civil conflict have long recognized the importance of state strength in the suppression of nascent insurgencies. However, previous empirical investigations have generally focused on the material and coercive dimensions of state power, obscuring the critical role played by the generation of widespread voluntary compliance through processes of political communication, that is, the production of “soft power.” In contrast, in this article I focus on a factor—mass communication technology—that can enhance state capacity only by strengthening the state's ability to broadly and publicly disseminate political messages. I argue that the enhanced capacities for large-scale normative influence generated by mass communication technologies can be expected to produce substantial barriers to the mobilization of militarized challenges to state rule, by strengthening economies of scale in the marketplace of ideas. Utilizing newly compiled cross-national data on mass media accessibility in the post–World War II period, I show that densely constituted mass media systems dramatically reduce the probability of large-scale civil violence, thereby providing new evidence for the fundamental importance of nonmaterial state capacities in the suppression of internal armed conflicts.