Reneging on alliances: Experimental evidence

To what extent can democratic leaders mitigate the costs of reneging on alliance agreements? Previous research suggests that democratic leaders suffer from domestic backlash if they decide to renege on alliance treaties. However, less is known about whether and to what extent leaders can mitigate the domestic costs of reneging on alliance commitments. We study strategies leaders use to mitigate these costs. Specifically, we experimentally investigate whether and how much the costs of reneging are affected by different sidestepping strategies and the costs of fulfilling an alliance commitment. Results show that the potential costs of fulfilling commitments can dilute the domestic backlash for reneging on alliances, but various sidestepping strategies that work in the standard audience-cost context of reneging on a public threat do not work for reneging on a formal alliance. These findings expand our understanding of the reliability of democratic alliances and show that reneging costs are contingent on the context.