Askold and Dir
862 – The Severians attempted to rid themselves of the Varangian lordship, which led to quarrels among the Slavic tribes and culminated in the summoning of the Varangians to rule over the Slavic tribes. As a result, the land of Rus’ was founded by three Varangian brothers: Rurik, Truvor, and Sineus. Shortly after, Rurik became the sole ruler of the newfound nation and built Novgorod. At the same time, a Varangian state was established in Kiev, with Askold and Dir at its head, that unprecedently posed a substantial threat to the Byzantine empire.