evidence: The Sea of Azov is a tiny and small sea that historically has not often earned much strategic attention from the countries that possessed it. However, history reveals that the strategic importance of the sea periodically rises when at least two countries possess the shores of this sea. The sea lends itself to regional geopolitical rivalry, and as a result of tensions both sides often create Azov flotillas. [...] According to the 2003 agreement, Ukraine has legal control over 62 percent of Sea of Azov’s area and Russia only 38 percent, but since the annexation of Crimea, Russia possesses de facto three-quarters of the territory of the sea. It tries to impose this fact in relations with Ukraine. Plus, Russian proxies are possessing additional territories in the East of Ukraine that plays on Russian advances. The whole coastline of the breakaway Donetsk People’s Republic is approximately 45 km. In their territories, there are plans to erect a naval base in the Obryw village. It is more likely that Russia will be denying its involvement in the creation of the base. Therefore, in the Sea of Azov there are three major established naval centers in the zones of control under Ukraine, Russia, and the separatist republic of DPR.