This article focuses on how the European Union’s (EU) mediation activities during the Russia-Ukraine and Israel-Palestine conflicts are perceived by local elites. Our analysis is based on recent interviews with decision makers in Ukraine, Israel and Palestine. Consistent with this special issue, we investigate perceptions ofEUroles, strategies and effectiveness. We suggest that theEU’s relation to the parties may affect their perceptions ofEUconflict mediation efforts. Specifically, we expect that theEUis perceived as abiased mediatorin both cases due to perceived close relations to one or more conflict parties. However, contrary to our expectations and widespread assumption in mediation theory, while such a bias exists, we found it isnotperceived as a main cause ofEUineffectiveness. Other factors, including the prominence of other mediators and internalEUdisunity, are perceived as more detrimental toEUefficacy.