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Drone of the occupiers/OOS
Russia should use more drones. The fact is that Ukrainian air defense limits manned flights beyond their front line.
Thus, this leads to an increase in demand for drones, the aggressor country depletes its capacities.
The invaders will have problems with drones
Note that the UK has imposed sanctions against the Russian company Kronstadt, which is the main manufacturer of the Russian Orion drone and other UAVs.
It is their Russia that widely uses while fighting in Ukraine.