Drones are controlled by varying the speed of the motors while helicopters are controlled by varying the pitch of the blades at various points in the rotation. If a motor fails on a drone then it's lost, there is no way of controlling it.
The helicopter rotor will spin while falling and the pilot can then mechanically control the pitch of the blades purely mechanically which gives some control.
By allowing Russia to expand it further provokes the west to use nuclear weapons. Huh, guess we're at a deadlock. I guess Russia could give back what they stole.
It sounds like a strange scenario. You can write a lot of text but not make it precise?
I'd say it's better to have it short and precise. It gives you an opportunity to study the details and learn while the long text sounds like it could be more open to interpretation and confusion
If they're up to 20 km it could take you a while and they're very small and difficult to see, possibly going through difficult terrain.