The European Union (EU) seems to have reached a new momentum in its development, characterized by renewed contestation. EU policies and actions are being contested, both domestically – by the proliferation of nationalist, populist and Eurosceptic voices (De Wilde, Koopmans, Merkel, & Zürn, 2019; Falkner & Plattner, 2019; Zeitlin, Nicoli, & Laffan, 2019) – as well as on the global level – by re-emerging global power competition, the open contestation of norms of multilateral cooperation by emerging as well as new isolationist powers (such as former United States (US) President Donald Trump), and within international (non-governmental) organizations (Aggestam & Hyde-Price, 2019; Copelovitch, Hobolt, & Walter, 2020; Hill & Hurst, 2020; Ikenberry, 2018; Johansson-Nogués, Vlaskamp, & Barbé, 2020; Riddervold & Newsome, 2018). While the contestation of EU actions and policies can be considered as a long-term phenomenon, especially with regard to EU foreign policy, the novelty of the situation stands in the multiplicity of contesting voices, as well as the nature of the new contesting actors (Johansson-Nogués et al., 2020). Furthermore, this contestation intertwines with a re-consideration of the values on which the EU is based and which it seeks to promote, which suggests a new shift in the Union’s role and representation. Given on-going challenges in Europe (e.g. migration and solidarity crises, rise of illiberalism) as well as recent developments in EU politics (with a new Commission and therefore also new High Representative of the Union for Foreign Affairs and Security Policy/Vice-President of the European Commission (HR/VP) coming into office in 2019), we aim to analyse afresh EU foreign policy in this arguably new environment: What are the origins of contestation (re-)emerging within and towards EU foreign policy? Which voices are contesting EU foreign policy? To what extent do EU values and norms still matter in foreign policy, when it comes to immediate reactions to external events? To what extent does this contestation impact the decision-making process, the actual implementation of decisions and thereby the effectiveness of EU foreign policy?
