Belarus–Ukraine relations
Belarus–Ukraine relations (, "Byelaruska-ŭkrainskiya adnosiny", , "Ukrains'ko-Bilorus'ki vidnosyny", , "Belorussko-ukrainskiye otnosheniya") are foreign relations between Belarus and Ukraine. Both countries were successively ruled by the Polish-Lithuanian Commonwealth, the Second Polish Republic, and ultimately, the Russian Empire. Prior to the 1991 breakup, both countries were part of the Soviet Union as the Belarusian SSR and Ukrainian SSR when they were the founding members of the United Nations in 1945. Being Slavic nations, both Belarus and Ukraine share closely related cultures and are predominantly inhabited by the East Slavic ethnic groups of Belarusians and Ukrainians respectively, along with a few Russians. Today, the two countries share an 891–km border.
Slavic paganism
The Christianisation of the Slavic peoples was, however, a slow and—in many cases—superficial phenomenon, especially in what is today Russia. Christianisation was vigorous in western and central parts of what is today Ukraine, as they were closer to the capital Kiev, but even there, popular resistance led by "volkhv"s, pagan priests or shamans, recurred periodically for centuries. Even though the Byzantine Christianization firstly has slowed down the Eastern Slavic traditions in Rus', it has preserved the Slavic traditions in the long term. While local Slavic figures and myths, such as Baba Roga in Croatia were forgotten, Slavic culture continued to exist and even flourish in the Eastern Slavic countries. In the case of a Christian Latinization of the Eastern Slavic countries, this may not have been the case.