"In comparison with last year, the frequency of NATO reconnaissance flights in the Black Sea region has increased by almost three times," Gostev told "Voennyi Vestnik Yuga Rossii" newspaper.
In 2019, the NATO aviation carried out 270 such flights, followed by some 530 last year. In 2021, the alliance has made over 560 flights.
French jets as well as the NATO joint forces tactical aviation have joined US surveillance aircraft and drones in these activities, the commander added.
Russia promptly reacts to the actions in "strict" compliance with international norms to prevent violations of national airspace, according to Gostev.