Bones of the Hills - Conn Iggulden

The third novel in the No. 1 bestselling Conqueror series, following the life and adventures of the mighty Genghis Khan and his descendants. Genghis Khan, risen from outcast to ruler has united battling tribes, but faces troubles. Emissaries are tortured and killed. Trade route efforts are violently rebuffed. The Mongolian army is stretched to the furthest corners of Khan's realm, and destruction looms