The book involves Polish and Soviet authors, explores the problems of political relations between Europe and the Black Sea region, foreign policy relations between Russia and Poland and each of them with Turkey and Crimea from the end of the 15th to the beginning of the 18th century, the role of the Caucasus and the Danube principalities in the political life of that time. In scientific circulation, the authors introduce a lot of new information about dating, sources, their authorship