On September 2008, five Institutes, the Istituto Affari Internazionali (coordinator, Rome), Centro Studi sul Federalismo (Turin), Federal Trust (London), Institut für Europäische Politik (Berlin), Notre Europe (Paris), in cooperation with Tepsa and EU-CONSENT, both networks of research centres in Europe, and with the support of the Institute of European Democrats - IED of Brussels, have joined to carry out a study on a crucial topic: how to make the process of European integration more legitimate.