"Any suggestion that U.S. or coalition forces played a role in an attack on a Russian base is without any basis in fact and is utterly irresponsible," a Pentagon spokesperson said in a statement to Military Times, Censor.NET reports.
Rob Lee, a former U.S. Marine Corps officer and doctoral candidate who focuses on Russian defense policy at King’s College London, said the allegations are dubious.
"It is sometimes hard to tell which claims Russian officials believe and which are merely rhetoric," he said. "Sometimes it is easier just to blame the Americans than acknowledge that they were not prepared to stop unsophisticated, off-the-shelf UAVs — which was particularly embarrassing because of how much they publicized the effectiveness of their air defense systems."
While U.S. research toward drone swarms is definitely underway, the allegation that the U.S. attacked a Russian air base with the technology, risking an escalation with a peer adversary seems unlikely.
Russian Deputy Defense Minister Alexander Fomin said Thursday that 13 drones were heading toward Khmeimim air base in Syria’s coastal Latakia province when a U.S. Navy P-8 Poseidon flying over the Mediterranean took "manual control" of them and began searching for "holes through which they started penetrating."
"Then they were destroyed," Fomin said.
Russia has reported numerous rudimentary drone attacks by militants in Syria since the January incident.
In September, Russia Defense Ministry spokesman Igor Konashenkov told Kommersant, a Moscow-based newspaper, that a Russian airstrike targeted "warehouses of terrorists with unmanned aerial vehicles."
He added that 47 drones were destroyed around Khmeimim air base in the previous month.
"Of course, they improved their defenses after the January attack, and began focusing on stopping UAVs," Lee said.
One reason the deputy defense minister gave for accusing the U.S. of controlling the drones was that the swarm supposedly switched to manual guidance after encountering Russia’s electronic countermeasures.
This indicated that they were not controlled by militant forces, he said.
"Only a technologically advanced country has access to such tools; they cannot be made in the Syrian desert," the deputy defense minister said.
In January, Russian President Vladimir Putin said that while the drones looked primitive, they contained high-tech elements allowing precision satellite guidance and the release of munitions.
Lee is unconvinced. If the allegations against the U.S. military were truthful, it would be counter-intuitive for Russia to publicize that their base defenses were penetrated by American drones and they took no retaliatory action in response.
"After the firefight between pro-regime forces, including contractors from the Russian private military company Wagner, and U.S. forces in February, they were very quick to emphasize that the Russian government had no role in [the attack] to prevent any kind of escalation," Lee said.
Khmeimim air base was purpose-built for the Russian air force in 2015. The airstrip is capable of landing large transport planes, as well as bombers, fighters and helicopters.
Putin announced this summer that an agreement was reached with Syrian President Bashar al-Assad to allow Russian forces to remain at Khmeimim for another 40 years.
As to whether the U.S. is even capable of sophisticated drone swarm attacks at this point, that remains unclear.
While the Navy’s P-8A Poseidon can communicate with drones, it has not been publicly shown to be able to command a fleet of them.
Still, the Pentagon has long been interested in developing a drone swarm capability.