Europe had heard little of the earlier conquests of Genghis Khan in Asia and had only the faintest glimmer of information about his destruction of the Khwarizm empire—but suddenly, with the fall of Kiev, a mass of refugees and stories came pouring out of eastern Europe. Right behind them came the feared Mongol horsemen, seemingly from every direction. Matthew Paris wrote that the Mongols invaded the West “with the force of lightning into the territories of the Christians, laying waste the country, committing great slaughter, and striking inexpressible terror and alarm into every one.”