 Michael Psellus, an eyewitness of the battle, left a hyperbolic account detailing how the invading Kievan Rus' were annihilated by a superior Imperial fleet with Greek fire off the Anatolian shore.According to the Slavonic chronicles, the Russian fleet was destroyed by a tempest.The Byzantines sent a squadron of 14 ships to pursue the dispersed monoxyla of the Rus'.