Siege of Kiev (1240)

The Siege of Kyiv by the Mongols took place between November 28 and December 6, 1240, and resulted in a Mongol victory. It was a heavy moral and military blow to Halych-Volhynia and allowed Batu Khan to proceed westward into Europe.

• http://en.wikipedia.org/wiki/Siege of Kiev (1240)
• Page 149-150 - Weatherford, J., 2004, Genghis Khan and the Making of the Modern World: Three Rivers Press, New York, 312p.