Russia and Ukraine have common roots, common ancient history. The two countries, now separated not only by state, but by ideological and political borders, consider themselves the direct heirs of Kievan Rus, its glorious epic past. And, it would seem quite natural, two peoples who have a common ancestor, a common cultural and historical source, should talk about their unity. However, we observe something completely different - both in politics and in historical science, confrontation is intensifying. The two states are in a long-term dispute about their past, mutual accusations are heard, alienation is growing...