if I am not mistaken. I believe in Nigeria and Chad, it's more jungle warfare. Where in Syria and Iraq it's desert warfare.
I really dont think that drones will help much in this situation, because they just hide in the jungle. I think when those schoolchildren were taken, they were taken deep into the jungle. And as Vietnam showed, even if you bomb the crap out of the jungle, they just find holes to hide in till it's over.
Really you need boots on the ground.
Or just turn the continent of Africa into a penal colony for the world.