This chapter argues that the Europeanization of Slovak foreign policy following entry into the EU has been characterized by two kinds of ambivalence. First, the ambivalence of institutional adaptation, where there has been an effort to stabilize, standardize, and professionalize Slovak diplomatic capacities while at the same time efforts are being made to negotiate the requirements of the dynamically evolving institutional setting of EU foreign policy-making post-Lisbon, notably the European External Action Service (EEAS). Second, the ambivalence of foreign policy adaptation, where there has been a shift in Slovak foreign policy-making from a focus on full harmonization with the Common Foreign and Security Policy (CFSP) toward efforts to promote specific interests, which may sometimes be at odds with the positions of the leading actors in EU foreign policy-making. In the first part, we address institutional adaptations. The second part addresses policy adaptations, followed by the Conclusion.