" The title 'Lord of All-Rus' did not possess much basis either in history or in current reality. It came into the same category as that whereby the kings of England laid claim to France. In the 1490s, two-and-a-half centuries after all traces of a united Kyivan Rus' had been destroyed, it had the same degree of credibility that the king of France might have enjoyed if, in his struggle with the German Empire, he had proclaimed himself 'Lord of all the Franks'. "

― Norman Davies , Europe: A History