The Russian Ministry of Defense informs about this. 

It is noted that the Su-27 from the air defense duty forces was lifted into the air to prevent violation of the Russian border. 

The crew of the Russian Su-27 identified the French E-3F long-range radar detection and control aircraft, as well as two Rafal-S multirole fighters of the French Aerospace Forces.

As the Russian Aerospace Forces fighter approached, the French planes turned away from the state border and left the airspace over the Black Sea. 

After this, the Su-27 returned to its home airfield.

Earlier, Russian air defense systems shot down a MiG-29 fighter of the Ukrainian Armed Forces in the Nikolaev region.