"Battle of Voronezh River" . "Several tumen of nomad cavalry" . . "Mongol Empire" . "defeat on the Voronezh River" . "Mongol victory; Ryazan besieged afterwards" . . "Light" . . . . "Principality of Ryazan" . . . "A few hundred cavalry and no more than 1000\u20132000 militia on foot" . . "Battle of Voronezh River" . . . "Voronezh River" . . . . "Kievan Rus'" .