var vtn_player_type = "vp";var ven_video_key="NjAxMzgzfHwxNDcxfHwwfHx8fHx8";var ven_width="660";var ven_height="409";In Maroua, northern Cameroon, the fight against Islamist group Boko Haram has shaken the economy of this town of 200,000 people. Duration: 02:07