What destroyed kiev in 1240 ad?

In 1240 AD, Kiev was destroyed by the Mongol invasion led by Batu Khan, a grandson of Genghis Khan. The Mongols besieged the city, employing brutal tactics and overwhelming force, which ultimately led to the fall of Kiev. This event marked a significant moment in the Mongol conquest of Kievan Rus', resulting in widespread devastation and a major shift in the region's power dynamics. The destruction of Kiev symbolized the decline of the Kievan Rus' as a political entity.