the region: Modern scholars find this an unlikely series of events, probably made up by the 12th-century Orthodox priests who authored the Chronicle as an explanation how the Vikings managed to conquer the lands along the Varangian route so easily, as well as to support the legitimacy of the Rurikid dynasty. The three brothers—Rurik, Sineus and Truvor—supposedly established themselves in Novgorod, Beloozero and Izborsk, respectively. Two of the brothers died, and Rurik became the sole ruler of the territory and progenitor of the Rurik dynasty. A short time later, two of Rurik's men, Askold and Dir, asked him for permission to go to Tsargrad (Constantinople). On their way south, they discovered "a small city on a hill," Kiev, captured it and the surrounding country from the Khazars, populated the region with more Varangians, and "established their dominion over the country of the Polyanians." The Primary Chronicle reports that Askold and Dir continued to Constantinople with a navy to attack the city in 863–66, catching the Byzantines by surprise and ravaging the surrounding area, though other accounts date the attack in 860. Patriarch Photius vividly describes the "universal" devastation of the suburbs and nearby islands, and another account further details the destruction and slaughter of the invasion. The Rus' turned back before attacking the city itself, due either to a storm dispersing their boats, the return of the Emperor, or in a later account, due to a miracle after a ceremonial appeal by the Patriarch and the Emperor to the Virgin. The attack was the first encounter between the Rus' and Byzantines and led the Patriarch to send missionaries north to engage and attempt to convert the Rus' and the Slavs. Foundation of the Kievan state Rurik led the Rus' until his death in about 879 or 882, bequeathing his kingdom to his kinsman, Prince Oleg, as regent for his young son, Igor. According to the Primary Chronicle, in 880–82, Oleg led a military force south along the Dnieper river, capturing Smolensk and Lyubech before reaching Kiev, where he deposed and killed Askold and Dir: "Oleg set himself up as prince in Kyiv, and declared that it should be the "mother of Rus' cities." Oleg set about consolidating his power over the surrounding region and the riverways north to Novgorod, imposing tribute on the East Slav tribes. In 883, he conquered the Drevlians, imposing a fur tribute on them. By 885