Byzantine Empire Rus'–Byzantine War: Varangian prince Oleg of Novgorod leads the Kievan Rus' in a campaign against Constantinople, concluded by the Rus'–Byzantine Treaty (in which the city of Chernihiv in Ukraine is first mentioned). He lays siege to the Byzantine capital with some 2,000 ships (dugout boats), and secures trading rights from the world's leading center of commerce.
Byzantine Empire Rus'–Byzantine War: Varangian prince Oleg of Novgorod leads the Kievan Rus' in a campaign against Constantinople, concluded by the Rus'–Byzantine Treaty (in which the city of Chernihiv in Ukraine is first mentioned). He lays siege to the Byzantine capital with some 2,000 ships (dugout boats), and secures trading rights from the world's leading center of commerce