A-50.

This is coolbert:

Attack cost-efficient to say the least.

Belarus partisans at work? Perhaps even Ukrainian special operation units operating Belarus?

Russian A-50 AEW&C aircraft now out of action the Ukraine Conflict. To what extent damaged not clear.

1. "Explosions near Machulishchy air base in Belarus: Russia’s A-50 aircraft might be hit"

From www.ukrinform.net | UKRINFORM 26.02.2023. 

"This morning explosions have occurred near the Machulishchy air base in Belarus. As a result, Russia’s A-50 airborne early warning and control aircraft might have been hit."

[....]

“'According to the preliminary data, the morning/night attack targeted Russia’s A-50 AEW&C aircraft, which might have been hit,' the report states.

"The aircraft could have been damaged by 'an unidentified object dropped from a height'."

THIS SOUNDS TO ME LIKE A SOVIET WW2 ERA SHAPED CHARGE HAND GRENADE PARACHUTE STABILIZED AS DROPPED FROM A QUADROCOPTER DRONE!

Further:

2. "RUSSIAN LONG-RANGE RADAR DETECTION AND CONTROL AIRCRAFT TARGETED AT AIRFIELD IN BELARUS – REPORTS"

From southfront.org/ 27.02.2023. 

"On the morning of February 26, a military airfield located on the outskirts of the capital of Belarus reportedly came under attack. This military facility hosted Russian military aircraft."

[....]

"Some local sources spread information that the attack was allegedly carried out by some Belarusian saboteurs who are members of the local radical opposition groups. Drone control consoles were reportedly found near the airfield."

Consider too and even more importantly the cost of a warplane the value of which would be about $300 million dollars being destroyed by a $1,000 drone!!

I think a direct hit on the cockpit of the A-50 would permanently disable the plane for any time into the near future.

coolbert.