The territories of Central Europe, including those of Poland, were not the centre of attention for the Byzantines. The situation was somewhat different in regard to Rus’ lands, with which political and religious ties, as well as armed conflicts, were more prevalent. The aim of the work, though, is not to showcase the Byzantine-Rus’ conflicts or marriages, but rather to display the state of knowledge (and, possibly, its sources) on the Polish and the Rus’ in times when the Byzantine Empire reclaimed and held its powerhouse status.