Pentagon: we will conduct operations in the Black Sea as we see fit 
borders of Russia. This is reported by RIA Novosti.
This is how he commented on Moscow's statement on the intensification of US and NATO military activities in the Black Sea, including overflights. “We conduct operations with NATO allies and, of course, unilaterally. Now we are talking, and in the Black Sea there are a couple of ships of the US Navy. This is an important principle to be upheld, “he said.
Kirby pledged that the United States will continue to fly, sail and operate in international air and sea space as it sees fit.
Previously On November 10, Russian Foreign Ministry spokeswoman Maria Zakharova pointed out that US actions in the Black Sea – for example, the passage of warships – indicate an attempt to threaten Russia with war. The diplomat is convinced that the exercises of the US Navy are just a cover. In fact, Washington wants to develop “ways of military action”, in particular, on the territory of Ukraine.
This is necessary in case Kiev thinks about “preparing a military solution” in Donbass, Zakharova said. “These steps by the United States lead to the creation of a multinational grouping of armed forces, destabilizing the situation in the Black Sea region in the immediate vicinity of the Russian borders,” she concluded.