The linguistic diversity of this volume's contributions, combined with the elaboration of positive examples regarding concerted actions - in spite of all crises! - between the member states, pays a unique tribute to the fact that the goal of concerted acting was already aimed at in the preamble to the EEC treaty. Relevant and contemporary examples prove that such a path may be the proper answer, if not a counter-programme to the various EU crises. These examples concern a number of political and legal fields; in particular, they relate to elements of international private law, criminal law, civil procedure law, passenger rights and data protection. Such concerted action is also dealt with in relation to the Union's external presence, in particular its economic relationship with the AU.