"The Emergence of Rus" is a nearly 30 years old book and will undoubtedly be outdated in places, but it remains an eminently worthwhile and enjoyable read - and one of the few out there that cover this period of history in some overall coverage and depth. The book starts with the Scandinavian origins of the Rus (the name Rus likely coming from a Swedish word, with the Frankish annals explicitly equating the name to the Swedes), as Scandinavian elites and traders merged and interacted with Slavs, Balts, and other people to create a new culture whose great towns and trading networks were organized next to and through the Dnieper and Volga rivers.
The book then covers the relationship of the Rus to its neighbors. The raids on Constantinople in 860 and 941 are described (a later 1043 attack on Constantinople under Yaroslav the Wise sums up the triad), and the level of East Roman (Byzantine) influence discussed, as is the relationship to neighboring Slavic, Khazar, Bulgar, Hungarian, Pecheneg, and Polovtsy/Cuman people. North-south/south-north (and to a more limited extent, west-east) trade in silver, enslaved people, and other wares was an important reason for both the emergence and the growth of the Rus.
The reigns of the princes of Kyiv are then covered in detail, starting with Igor, Olga, and Sviatoslav I. Sviatoslav successfully fought the Khazars and the Bulgarians, resulting in the collapse of their respective empires, hitherto more powerful than the Rus. Victory against the Khazars led to Rus dominance of the Volga trade including opening up the path to trade through the Black Sea. These battles succeeded in part through alliances with Pechenegs and Hungarians - with the East Romans joining in against the Bulgarians (though there were also some skirmishes between the Rus and East Romans). Sviatoslav and his retinue were, however, killed by Pechenegs on the way back to Rus, with Sviatoslav's skull supposedly made into a chalice for use by the Pecheneg khan.
A brief succession war followed between the two illegitimate sons, Oleg and Yaropolk, in 976, leading to Oleg's death until Vladimir (later Vladimir the Great), an illegitimate son, raised an army of Varangians and killed Yaropolk. At a time when multiple other monarchs (including the Polish and the Danish) converted to Christianity, Vladimir chose to do the same, getting baptized in 988. Marriage ties were arranged with Poland, Hungary, and Sweden. Vladimir also expanded Rus territory to the north and west and scaled up building efforts in Kyiv proper, as well as in some of the other Rus cities.
Vladimir's death resulted in a multi-phase 20-year succession war, which caused the death or imprisonment of 11 brothers before Yaroslav the Wise took the throne. The war between Yaroslav and his brother Sviatopolk, in particular, was a multinational event, bringing in armies of Poles, Germans, Hungarians, Pechenegs, and Khazars. As the authors note, Mstislav recruited by conquest, Sviatipolk by alliance, and Yaroslav mostly by hiring mercenaries.
Yaroslav was the last great patron of the Varangians (Scandinavians) among the Rus, following in his father's example. He married Ingegerd Olofsdotter, the daughter of Olof Skötkonung, King of Sweden (who was the son of Eric the Victorious, apparently the first Swedish king to be accepted as king by both the Swedes and the Geats). Olaf II of Norway and his son Magnus visited Yaroslav when they fleed from Canute in 1028/29, with Magnus brought up among Yaroslav's retainers - Magnus, known as Magnus the Good, later became King of Norway 1035-1047 and King of Denmark from 1042-1047. Likewise, Harald Hardrada served in exile as a mercenary commander under both Yaroslav in Rus and as commander of the Byzantine Varangian Guard - and married Elisiv, one of Yaroslav's daughters. Harald then returned to Scandinavia to join forces with Sweyn Estridsson against Norway, resulting in Magnus and Harald agreeing to co-rule Norway, until at Magnus' death Harald became sole ruler of Norway - before unsuccessfully attempting to conquer both Denmark and England. The latter attempt happened in 1066, when English King Harold Godwinson's brother Tostig pledged his allegiance to Harald and invited him to claim the English throne, leading to a 10,000 troop invasion that initially defeated the English but then resulted in his death. Three days later, William the Conqueror's landed in southern England.
But I digress (parts of the above aren't even in the book, but given my Scandinavian background, I wanted to highlight those parts that connect to that part of the world - and there are many!). The authors describe cultural, religious, architectural, and literary developments among the Rus, noting in particular that the Rus did not copy the East Roman appetite for Greek and Roman literature. They then describe the history of the Rus after Yaroslav the wise as one of fractured familial feuds that are difficult to follow but which show the importance of family relationships and divisions, with individual members of the family sometimes being attached to different parts of Rus, presaging the later development of Rus into a more regional polity. The Cumans/Polvtsky were peripheral players in some of these events in the 1000s and 1100s. The authors note that the more decentralized nature of the Rus polity did not mean the decline of Kyiv but that rather regionalization and continued cultural and economic growth went hand in hand. There was quite a lot of turnover of power, however: between 1000 and 1150 the average continuous reign of a prince was 7.5 years, while between 1150 and 1200 the average continuous reign was less than two years! While political and economic authority fractured, however, the authors argue that a single dominant culture created more of a common identity than had been the case in earlier times.
The book ends a few decades before the Mongols. I look forward to picking up subsequent history at a later point - starting with the Golden Horde and then the Muscovy that followed.