“…The importance of speaking and acting as one is a prominent theme, both explicitly and implicitly, in the scholarly literature on EU foreign policy and especially EU ‘actorness’ in world affairs (Sjöstedt, 1977; Jupille and Caporaso, 1998; Jupille, 1999; Meunier, 2000; Missiroli, 2001; Bretherton and Vogler, 2006; Lerch and Schwellnus, 2006; Smith, 2006; Groenleer and Van Schaik, 2007). Yet contributors to this literature disagree on how to define and measure the concept.…”