The visit follows Buhari's earlier trips to Chad and Niger. Over June and July, Nigeria's neighbours have experienced a rise in Boko Haram attacks. The uptick comes in reaction to the progress made by the regional military coalition between Chad, Niger, Nigeria, Benin and Cameroon against Boko Haram during the first four months of this year. However, the escalation poses new challenges for the governments in N'Djamena, Yaounde and Niamey.
The 8,700-strong Multi-National Joint Task Force should be consolidated shortly, although dates on a renewed surge have not been announced.
Contributor countries are seeking more international material and financial support for the campaign.
Heavy-handed tactics by the armies in their own border areas may alienate some local populations.
