National audienceThe European Union : object or actor of its constitution ? An essay on long-term institutional policy.Ever since its creation, European integration has been associated with the pursuit of peace. However, the issue of its institutions still remains unresolved. Political science has long stumbled over the identification of the 'Communauté', then of the Union. Logically, it has a better understanding of the EU public policies than of its decision-making processes. Therefore, the works of the Convention provide an opportunity for discussion. Democracy in the Union is legitimated by two elements: democracy of the States and this of their citizens, in spite of the difficulty to implement the majority rule. Questioning the concept...