An image grab taken from a video made available by jihadist media outlet Welayat Nineveh shows Rachid Kassim, a French member of the Islamic State group. Kassim used the Telegram messaging app to exhort followers to attack targets in France. Photo: Agence France-Presse
French terror investigators grapple with Telegram app, Islamic State’s messaging weapon of choice
An image grab taken from a video made available by jihadist media outlet Welayat Nineveh shows Rachid Kassim, a French member of the Islamic State group. Kassim used the Telegram messaging app to exhort followers to attack targets in France. Photo: Agence France-Presse