A video circulating on social networks appears to show French journalist Olivier Dubois, who was taken hostage by a jihadist group in Mali almost a year ago. The man, who seems to be in good health in the video of just over one minute, addresses his parents and his partner, from whom he says he receives messages. The video, which surfaced on Sunday, has not been authenticated and its provenance is unknown, as is the date when it was filmed. 🔴 Espoir ! La nouvelle vidéo d’Olivier Dubois est évidemment un signe positif. Nous comptons sur les autorités maliennes et françaises pour mettre en œuvre…