Survivors say some of the Chibok girls have been brainwashed into fighting for the Nigerian Islamist group
The hostages are still being identified, and it is unclear if they are the missing schoolgirls from Chibok
'Diplomatic tit-for tat' intensifies as Pretoria issues strongly worded statement criticising Nigeria
New president vows to succeed where Goodluck Jonathan failed and rid Islamist militants from the north
Overnight bloodshed follows declaration of 'war'
Dozens of people, mostly children, were kidnapped as Islamist militants crossed border into Cameroon
Lack of international support, political inertia and inherent corruption are to blame for bloodshed
Before and after images show devastation of 'catastrophic proportions' and one town almost wiped off the map
The UN launches an emergency appeal for funds as China is criticised for its failure to contribute
By 2050, Africa’s population will hit 2.4 billion. What effect will this have and what opportunities will it present for your business?