Dead Center — Andy McNab

The young son of a Russian oligarch is kidnapped, and his father will pay anything, do anything, stop at nothing to get him back. Up to now though, everything he has tried has failed. He needs the one man with the know-how, the means and the guts to complete the mission: ex-SAS trouble-shooter Nick Stone…
But for Nick, the mission will take him to the poorest and most violent country on the planet, Somalia â€" a lawless land, ripped apart by civil war and famine, fought over by drug-fuelled, gun-crazy clan fighters. They want to make the world to sit up and take notice â€" any way they can…