Control of increasingly scarce water is being used by armed groups to challenge central governments, causing untold suffering to civilians.
A handful of psychiatrists - one for every million people - deal with the minds of Nigerians racked by Boko Haram terror
Could psychosocial programmes turn extremists into moderates?
Most were abducted, others chose to go but all have to face the stigma and hope for acceptance.
The army's director, Colonel Sani Kukasheka Usman, reassured citizens that they are capable of defending them from the terrorist group.