Ok, this is what the Russians are saying:
Quote:
What especially disturbs the Russian analysts – and on this point they are still unable to identify the source – is that the drones were accurately programmed not only to reach the bases, but to hit specific targets that could not be attacked using standard GPS-generated maps or rely on GPS for accurate targeting. The single camera-equipped drone was there to help adjust the final target, indicating a fairly sophisticated command and control capability, something that clearly impressed the Russian General Staff. The drones also were programmed with accurate intelligence that was harmonized with GPS maps.
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Russians asking for help after swarming drone attacks | Asia Times
So it's the intelligence rather than the drones themselves they say was sophisticated, I think.