The book is devoted to the consideration of numerous wars between Muscovite Rus' and the Grand Duchy of Lithuania and the Polish-Lithuanian Commonwealth, which took place over more than 300 years. Along the way, some other armed conflicts are described: civil wars of the feudal period, Tatar raids, Cossack uprisings. Nowadays, the events of those distant times are partly forgotten, partly insufficiently studied, partly known in a distorted form.

The book is based on the works of pre-revolutionary historians (Karamzin, Solovyov, Kostomarov and many others), as well as studies of modern Russian and Belarusian scientists.

The book is designed for a wide range of readers: from professional historians to high school students.