The author devotes his book to the history of relations between the Moscow state and the robber Crimean Khanate in the XV-XVII centuries. and a unique personality - a Croatian nobleman, Slavic patriot, Catholic priest of the XVII century. Yuri Krizhanich, who gives an answer to an important, but very difficult for practical solution question that has long been overdue in the Moscow state: defend against the Crimeans or attack them.