Russia's got unmanned aerial vehicles over there, therefore it is somehow a reasonable hypothesis that a set of aerial lights that do not in any way match the look or behavior of those, nor geographically connected, but they share the common characteristic of being apparently airborne, so they must too be Russian...? That is bonkers logic.
Point taken, but the current Russian government has demonstrably engaged in illegal violent acts, hostile surveillance and border infringements against a number of European nations with which it is not at war.
Russian manned warplanes, reportedly three MiG-31s, violated Estonian airspace on 19 September 2025.
"Russian fighter jets violated Estonian airspace for 12 minutes, officials say: "Unprecedentedly brazen" ",
CBS News 19 Sept. 2025,
"Estonia seeks Nato consultation after Russian jets violate airspace",
BBC News updated 20 September 2025.
Estonia is not geographically connected to Ukraine. Russian aircraft have GPS.
The Russian drone incursion into Poland involved
nineteen unarmed drones, including Gerberas. It is hard to see why only drones of a type frequently used as decoys during armed drone attacks in Ukraine would be diverted by Ukrainian systems, but not their more lethal "kin".
"Accidental or deliberate? Russia's drone incursion into Poland is a test for Nato",
BBC News 10 September 2025, also
"Analysts identify images of drones used in Polish incursion",
BBC News 10 September 2025.
Two Gerbera drones were found in Lithuania, one at the Gaižiūnai military training area 100 km from the Belarus border (Lithuania has no border with Ukraine; it has a border to the west with the Russian enclave Kaliningrad). It is possible they were spoofed by Ukrainian systems; if so they then flew across Belarus without being intercepted and one by chance landed near a military base;
Wikipedia, Gerbera (drone).
If a Western government
believes drones are being used to disrupt normal civil functions, or that unauthorised drones are flying over military establishments, it is not surprising that they might consider Russian involvement.
"...they share the common characteristic of being apparently airborne, so they must too be Russian...?" is of course a valid criticism of the response to the claimed Copenhagen airport sightings, but equally "Only manned Russian aircraft and fixed-wing drones have demonstrably violated Western nation's airspace, so we can rule out quadcopters" might be overly optimistic.
Russian interests have sponsored low-key criminal attacks in the West making use of local "recruits", e.g.
"Gang who set fire to warehouse in London for the Wagner Group are jailed",
Metro 24 October 2025, "Men jailed over arson attack for Russia on Ukrainian business in London",
BBC News 24 October 2024 .
Hobby drones are easily obtained and clearly have the potential to interfere with legitimate aviation activities.
None of which makes the claimed Copenhagen airport sightings more likely to be Russian or Russian-sponsored drones, as the presence of
any unauthorised drones there (or at Borris Skydeterræn) has not been demonstrated, very possibly because there weren't any.
But I think it is understandable that Western agencies initially believing that they are dealing with a specific "drone problem" might consider Russian involvement, and sadly it's a possibility that they will continue to have to be aware of.