“Do Russia and Iran have the highly secure software and gobbs of bandwidth on the battlefield to carry off such an operation? My guess is that US and NATO hackers and Ukrainian electronic countermeasures crews say otherwise.”
You are probably right. Maybe this is all done in the Ukraine or nearby Russia. We/USA do operate drones from thousands of miles away. Depending on the situation.
The most troublesome Iranian drone is huge. With the wingspan of an eagle and powered by one propeller in the rear. It is delta shaped.
See my post No. 45, above. The Ukrainians are already making good use of a US air defense system against low flying drones known as Vampire, with other models coming from Europe.