The whole "tribal warfare" thing irritates me a bit.
I know "tribal warfare" as warfare composed of raids for loot, done by semi-permanent warbands that are led by a charismatic leader.

It shouldn't be difficult to identify those who benefited of loot or to identify a well-known charismatic leader.

It shouldn't be very difficult to make raids less profitable.
Actually, I don't see where there's loot to be had in attacking outposts and burning fuel trucks.

So maybe it's not as much tribal warfare as it is about highwaymen (taxation of civilian truckers at checkpoints), racketeering and smuggling (drugs, weapons, whatever) that keep the enemy (note I don't wrote 'Taliban') up economically?

Wouldn't "Mafia" be a better description than "tribe"?