Yet after more than 10 years of fighting the armed group, violence is on the rise in the northeast.
Boko Haram is suspected of being behind an attack on Saturday that's described as the most violent on civilians this year.
The UN says at least 110 people were killed in the assault on farmers in rice fields near Borno State's capital Maiduguri.
So what's been done to fight Boko Haram?
And can it be defeated?
Presenter: Bernard Smith
Ovigwe Eguegu, Geopolitical and Security Analyst at the think tank Afripolitika
Vincent Foucher, Consulting Senior Analyst for West Africa at International Crisis Group
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