Stéphane Troussel PS president of the department of Seine-Saint-Denis, is this Monday, October 31, the guest of the morning of RFI. He has just published a book Seine-Saint-Denis, La République au Défi, published by Aube. Election of President Lula da Silva in Brazil, French politics, reflections on the left and France… He answers Frédéric Rivière’s questions.