Having always been among the protagonists of the international scene, France has always made choices of domestic and international politics that still oblige us to look with great attention to the model of the "Fifth Republic". In this book, Alessandro Figus illustrates how this political and legal structure has been moving throughout history to get to this day. With competence and critical sense, the author highlights the steps to make us understand the maturation of a system often taken as a model for institutional reforms, also in our country. In integrating the historical-cultural dimension with the historical and juridical actuality, the focus is then set on in-depth analysis of the political-institutional peculiarities of the French semipresidential political system, articulated and original at the same time . What we read teaches us that every institutional reform, in addition to seeking the widest sharing of criteria and contributions, must also take into account the historical processes that have followed, maturing in this sense an autochthonous models which cannot be exported. France was the founder country of the EU, and still plays an important role in the global chessboard: in this sense the author helps us in better understanding this model alowing with the country's traditional Euro-Mediterranean role, its strategic choices, and its attempt to integrate following the great migrations.