The Ukrainian source:
"The SBU military counterintelligence attacked the airfield in Kursk, Russia, on the night of August 27. Aircraft and air defense equipment of the occupiers are placed there.
Sources in the Security Service of Ukraine told RBC-Ukraine about this .
According to our sources, the Kursk airfield was attacked by the SBU military counter-intelligence at night.
It is known that kamikaze drones have destroyed four Su-30 aircraft and one MiG-29. The S-300 complex's radars and two "Pantsyra" are also among the targets hit.
Almost all SBU drones reached their targets, according to preliminary information, only three of them were shot down by Russian air defense."