Kievan Rus'
Steppe peoples

From the 9th century on, the Pecheneg nomads had an uneasy relationship with Kievan Rus'. For over two centuries they launched sporadic raids into Rus', which sometimes escalated into full-scale wars, such as the 920 war on the Pechenegs by Igor of Kiev, reported in the Primary Chronicle, but there were also temporary military alliances e.g., the 943 Byzantine campaign by Igor. In 968, the Pechenegs attacked and besieged the city of Kiev.

Boniak was a Cuman khan who led a series of invasions on Kievan Rus'. In 1096, Boniak attacked Kiev, plundered the Kiev Monastery of the Caves, and burned down the prince's palace in Berestovo. He was defeated in 1107 by Vladimir Monomakh, Oleg, Sviatopolk and other princes of Rus'.
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