Five African countries agree to fight Boko Haram together
Benin, Cameroon, Niger, Nigeria and Chad will deploy 8,700 troops to fight the militants
Five African nations have pledged to deploy 8,700 security forces as part of a regional effort to fight Boko Haram militants in Nigeria.
They are Benin, Cameroon, Niger, Nigeria and Chad.
Boko Haram's attacks have increasingly spilled over from Nigeria into neighbouring nations.