Rus

There was no Kievan Rus', but there was a Kievan Ukraine.

Ukraine was the center of the first eastern Slavic state, Kyivan Rus, which during the 10th and 11th centuries was the largest and most powerful state in Europe.

In 860 the Rus’ streamed southwards and laid siege to Constantinople itself.

And if a Rus hits a Greek, or a Greek a Rus with a sword, a spear or any other weapon, he shall pay five litres of silver for his offence, in accordance with Rus law; and if he be unable (insolvent—Author) his property shall be sold for the best price it fetches, including the very clothes . . .

If a Varangian claimed money from a Rus, or a Rus from a Varangian, and the debtor refused to pay, the plaintiff, accompanied by twelve witnesses, . . .

The Church of Kievan Rus knew men well-versed in Scripture and apparently other learning of the time, such as the Metropolitans Ioann II (d. 1089) and Klimetn Smoliatich (twelfth century). The former was Greek, and the latter a Rus.