Over the past year West Africa has suffered terror attacks on nations previously untouched by jihadists, as well as confronting an Islamist insurgency that began in northeast Nigeria but has spread to several neighbouring countries.
That meant greater intelligence sharing and military co-operation is required, said the incoming head of the Economic Community of West African States (ECOWAS) commission, which implements policy decisions agreed by its 15 members.
"The multiplication of terrorist hotbeds in our region compels us to share information on their activities, to communicate, co-ordinate and harmonise our efforts," said Benin's Marcel Alain de Souza at an ECOWAS summit in Dakar.
He was speaking after 32 troops were killed in a clash with Boko Haram fighters on Niger's border with Nigeria, one of deadliest tolls inflicted by the jihadists.
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A multinational force from Nigeria, Niger, Chad, Benin and Cameroon already exists and is due to launch a major offensive on Boko Haram around Lake Chad.
But Boko Haram's seven-year insurgency has left at least 20,000 people dead in Nigeria and made more than 2.6 million homeless, leading to calls for more support within the region.