Making studies of written sources relating to the diplomatic activities of Hetman Bohdan Khmelnytsky, and particularly the Turkish-Ottoman written documents (manuscripts), is required to obtain new data, so as to confirm the fact of the interstate relations of the Ukrainian Cossack State with the Ottoman Empire to have been rising. Moreover, an important meaning of the Black-Sea vector of the foreign policy of the said Hetman was accounted forf by the needs for the Ukrainian people to get sure of a support in its liberation struggle against its enemies. There have been analysed the causes of strengthening the role of the above said trend in the foreign political activities of B. Khmelnytsky. By the way, this problem in due time was paid attention to in academic studies of such famous Ukrainian historians, as Mykhailo Hrushevsky, Omelian Pritsak and Yaroslav Dashkevych, who concentrated mainly in studying separate aspect of the diplomatic activities of the Cossack-Hetmanic Ukraine in regard of the Crimean Khanate and Higher Porte in the middle of the 17th century. For a more detailed consideration of the problem touched in the given study there are also of importance the data, we have obtained from the original chronical manuscript “An order-letter from the Turkish Sultan Mehmed IV to the Cossack Hetman B. Khmelnytsky” that is kept in Kamyanets-Podilsky State-owned Ukraine’s Historical Museum-Archive, and which was firstly involved in an academic circulation. In this letter the Hetman speaks of his devoted friendship with the Sultan and of his loyal servicing to the latter one.
Source: Turanly F. (2019). Written documents on the Black Sea diplomacy vector of Hetman Bohdan Kmelnytsky. Bulletin of Taras Shevchenko National University of Kyiv. History. 140: 61-68