The recent naval incident in which the Russian authorities claim that their forces fired warning shots at a British destroyer in the Black Sea, stems from the effects of the annexation of the Crimean peninsula by Moscow (not recognized by the West) . If you want to understand more about how Russia uses the Black Sea to project power, we recommend the article “How annexing Crimea has affected the Russian Navy and overall power projection in the Black Sea region?” by Richard Kouyoumdjian.