United Nations (UN) General Assembly votes have become the standard data source for measures of states preferences over foreign policy. Most papers use dyadic indicators of voting similarity between states. We propose a dynamic ordinal spatial model to estimate state ideal points from 1946 to 2012 on a single dimension that reflects state positions toward the US-led liberal order. We use information about the content of the UN’s agenda to make estimates comparable across time. Compared to existing measures, our estimates better separate signal from noise in identifying foreign policy shifts, have greater face validity, allow for better intertemporal comparisons, are less sensitive to shifts in the UN’ agenda, and are strongly correlated with measures of liberalism. We show that the choice of preference measures affects conclusions about the democratic peace.

States use wedge strategies to prevent hostile alliances from forming or to disperse those that have formed. These strategies can cause power alignments that are otherwise unlikely to occur, and thus have significant consequences for international politics. How do such strategies work and what conditions promote their success? The wedge strategies that are likely to have significant effects use selective accommodation-concessions, compensations, and other inducements-to detach and neutralize potential adversaries. These kinds of strategies play important roles in the statecraft of both defensive and offensive powers. Defenders use selective accommodation to balance against a primary threat by neutralizing lesser ones that might ally with it. Expansionists use selective accommodation to prevent or break up blocking coalitions, which isolates opposing states by inducing potential balancers to buck-pass, bandwagon, or hide. Two cases-Great Britain's defensive attempts to accommodate Italy in the late 1930s and Germany's offensive efforts to accommodate the Soviet Union in 1939-help to demonstrate these arguments. By paying attention to these dynamics, international relations scholars can better understand how balancing works in specific cases, how it manifests more broadly in international politics, and why it sometimes fails in situations where it ought to work well.

“How long can NATO last in a post-US hegemonic, multipolar world?” has become an important question in contemporary world politics. By statistically analyzing NATO alliance cohesion since its inception, this analysis contributes to the literature by developing an original set of indicators that rely on the ideal point estimates from a recent UN General Assembly voting dataset. It empirically verifies that NATO members have higher cohesion than other UN members, although the United States has been the most significant deviating member since 1980. The findings support some earlier proposals such as the external threat hypothesis. They also contradict some others, notably the literature on the Donald Trump administration’s withdrawal doctrine, and the decline of US hegemony and its policy implications. The article concludes that the future challenge for NATO cohesion not only would be the possibility of US abdication or abandonment, but also other members’ balancing the United States as the hegemon.

This article provides researchers with a guide to properly construe and conduct analyses of conditional indirect effects, commonly known as moderated mediation effects. We disentangle conflicting definitions of moderated mediation and describe approaches for estimating and testing a variety of hypotheses involving conditional indirect effects. We introduce standard errors for hypothesis testing and construction of confidence intervals in large samples but advocate that researchers use bootstrapping whenever possible. We also describe methods for probing significant conditional indirect effects by employing direct extensions of the simple slopes method and Johnson-Neyman technique for probing significant interactions. Finally, we provide an SPSS macro to facilitate the implementation of the recommended asymptotic and bootstrapping methods. We illustrate the application of these methods with an example drawn from the Michigan Study of Adolescent Life Transitions, showing that the indirect effect of intrinsic student interest on mathematics performance through teacher perceptions of talent is moderated by student math self-concept.