Bombing that bears the hallmarks of the Islamist extremists has killed 32 people in the Nigerian city of Yola
Terrorist group has claimed responsibility for bloodshed on four continents since it formed
Nigerian army frees more women and children held captive by the Islamist group, but the fight is far from over
Survivors say some of the Chibok girls have been brainwashed into fighting for the Nigerian Islamist group
New president vows to succeed where Goodluck Jonathan failed and rid Islamist militants from the north
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
Overnight bloodshed follows declaration of 'war'
Dozens of people, mostly children, were kidnapped as Islamist militants crossed border into Cameroon
Before and after images show devastation of 'catastrophic proportions' and one town almost wiped off the map
Lack of international support, political inertia and inherent corruption are to blame for bloodshed
Boko Haram suspected of murderous attack by bomber who dressed as a schoolboy to get inside building
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?
Nigeria's population is expected to surpass the US by 2050. Where else will the continent grow?
World Cup whispers: A man divided, Suarez needs help, greenbacks for Ghana
World Cup whispers: Why always me? asks Italian striker, as World Cup finally gets a stalemate
World Cup whispers: Rooney picks Ed Sheeran and Stereophinics, Paul Scholes snubs Wilshere
Nigerian troops said to be 'scared' of entering areas in north-east under control by Islamist militants
Millions of dollars of ransoms said to be spent on weapons, travel and training camps for terrorists