Kievan succession crisis of 1015–1019

Kievan succession crisis of 1015–1019, also known as the Rus' civil war, was a period of internal conflict in Kievan Rus' following the death of Grand Prince Vladimir I in 1015. The struggle for power involved several of his sons: Sviatopolk, Yaroslav, and Boris.

Sviatopolk initially seized the throne but faced opposition from Yaroslav, who allied with Varangian warriors and took control of Kiev. Sviatopolk's attempt to eliminate his rivals led to the deaths of Boris and Gleb, who were later canonized as saints.

The conflict ended with Yaroslav emerging as the sole ruler in 1024, marking the beginning of his reign as Yaroslav the Wise and the consolidation of Kievan authority.