Nigeria's Maiduguri University digs trench to keep out Boko Haram
The University of Maiduguri in north-eastern Nigeria has taken drastic measures after a spate of attacks from Islamist militant group Boko Haram.
It is digging a trench 27km (17 miles) long around its campus to keep the jihadists out.
Reporter: Martin Patience
Video journalist: Ayo Bello