Video - Nigeria steps up fight against Boko Haram

Nigeria, Niger, Cameroon and Chad are stepping up their fight against Boko Haram.A place called Banki in northern Nigeria is the latest place to be taken away from the armed group. It was a staging post for cross-border attacks into CameroonAl Jazeera's Ahmed Idris travelled with the Nigerian army on a 14-hour trip from Abuja to the frontline in northern Nigeria.