The penultimate Russo-Byzantine War, as documented by medieval Greek sources, takes place in 1024, when a relative of the Kievan prince with 800 men and 20 ships penetrates into the Bosporus and, defeating a unit of the Greek coast guard, sails into the Aegean Sea.

The Kievans reach the island of Lemnos, where they are annihilated by a much stronger Byzantine fleet.

The conflict is not documented in Kievan sources and its motivation is obscure.