Published online by Cambridge University Press: 27 January 2020
Croatia and Serbia are two countries that started their paths toward the EU with similar conditions. Nevertheless, in 2018, the end of this study’s period, the two countries are characterized by different outcomes regarding European integration. This paper puts forward one key determinant for the more successful Europeanization process of Croatia—resolved statehood problem—and claims that the unresolved statehood problem in Serbia led to higher adoption costs of EU rules. Therefore, this article seeks to improve the theorization of the relationship between Europeanization and the statehood problem.