and the tree has been bent to the ground with sorrow. See also Cumania Battle of Kalka River Koten Notes References Basil Dmytryshyn, Medieval Russia: A sourcebook 850-1700, Academic International Press, 2000. External links Svyatopolk biography. Includes description of events. Stugna River 1093 Conflicts in 1093 1093 in Europe Stugna 11th century in Kievan Rus'