Translate the following English sentence to French:
"It is our duty to ask the Tunisian authorities to undertake all possible initiatives to establish a genuine multiparty political scene, and to guarantee the freedom of the press and freedom of association."
Nous avons le devoir de demander aux autorités tunisiennes de prendre toutes les initiatives afin d'instaurer un véritable multipartisme et de garantir la liberté de presse et d'association.