The Mongols made their first appearance in the Georgian possessions when this latter kingdom was still in its zenith, dominating most of the Caucasus. First contact occurred early in the fall of 1220, when approximately 20,000 Mongols led by Subutai and Jebe pursued the ousted Shah Muhammad II of the Khwarazmian dynasty to the Caspian Sea. With the consent of Genghis Khan, the two Mongol generals proceeded west on a reconnaissance mission. They thrust into Armenia, then under Georgian authority, and defeated some 10,000 Georgians and Armenians commanded by King George IV "Lasha" of Georgia and his atabeg (tutor) and amirspasalar (commander-in-chief) Ivane Mkhargrdzeli at the Battle of Khunan on the Kotman River. George was severely wounded in the chest.