(CNN)The voice behind the camera rings with falsetto glee as the frame fills with the remains of an aircraft, its wings burned and skeletal, its jet engine slumped in the wreckage.
Russia raises stakes with 'brazen' military intervention in Libyan conflict
"Our rocket did that ... this is their plane," the Libyan fighter yells.
He was standing in what remained of the strategically important al Watiya airbase, near the Tunisian border. Militia affiliated with the UN-recognized government had just overrun the base; forces loyal to renegade general Khalifa Haftar had fled.
Among Haftar's retreating fighters were dozens of Russian mercenaries hauling their Pantsir air defense systems with them. They are part of a larger force of some 2,000 Russians belonging to the private Russian military contractor Wagner, which has been in Libya since 2018.
The loss of al Watiya, on May 18, has been swiftly followed by further reverses for Haftar's forces, which last week retreated from Tripoli airport and the city of Tarhouna, their last toehold in western Libya.
This sudden shift of fortunes is more than another episode in Libya's intractable conflict.
It has less to do with the Libyans themselves than with outside powers pouring weapons, fighters and money into the country. The government is backed by Turkey and Qatar; Haftar by the United Arab Emirates, Egypt and Russia.
But Russia -- far from abandoning Haftar -- is doubling down. As the bedraggled convoy withdrew from the desolate airbase, the Kremlin had a surprise in store. Within a couple of days, Russian combat aircraft arrived in eastern Libya, glinting silver at two remote desert airfields.
US Africa Command (AFRICOM) said the jets -- a total of 14 MiG-29s and Su-24s -- had flown from Russia via Iran and Syria. While in Syria they'd been stripped of their markings. AFRICOM said the aircraft were "likely to provide close air support and offensive fires" for the Wagner fighters.
Most appear to be at the al Jufra base deep in the central Libyan desert; satellite imagery suggests an extensive support operation, including surface-to-air missiles.
President Vladimir Putin now has access to two air bases in Libya, strengthening the growing Russian presence around the Mediterranean -- and setting off alarm bells in Washington, which wants all foreign actors out of Libya
The commander of AFRICOM, Gen. Stephen Townsend, said of the Russian move: "Just like I saw them doing in Syria, they are expanding their military footprint in Africa using government-supported mercenary groups."
The Kremlin hasn't commented but the head of the defense committee in the upper house of the Russian parliament. Viktor Bondarev, said AFRICOM's claim was "stupidity" and suggested they were old Soviet planes from somewhere else in Africa.
Beyond the Libyan context, AFRICOM told CNN: "If Russia is allowed to effectively shape the ultimate result of the Libya conflict, the US, and especially NATO and Europe, will not like the outcome."
Tobias Borck, Associate Fellow at the Royal United Services Institute in London, said that "for there to be a Russian airbase in the southern Mediterranean -- that is the soft underbelly of NATO -- is a strategic concern."
A senior western diplomat said he had been surprised by Moscow's move. "That the Russian intervention went from mercenaries on the ground to jet fighters is really quite brazen and astonishing," the diplomat told