Russia's Defence Ministry said on Tuesday its Black Sea Fleet forces were tracking the French navy's Auvergne frigate after the vessel entered the Black Sea, the Interfax news agency reported.
East-West tensions are at a high with Ukraine, the United States and Western capitals voicing fears over a Russian troop buildup near Ukraine.
(Reporting by Maxim Rodionov; writing by Tom Balmforth; editing by Andrew Heavens)
