The war has been raging in Libya since 2011, when a popular uprising backed by the West and its allies led to the demise of the country’s dictator, Muammar Gaddafi. Much of the east of the country is controlled by the United States-backed Tobruk-led Government, which is affiliated with the Libyan National Army (LNA) and its commander, Field Marshal Khalifa Haftar. Russia also backs the LNA and is vying with the United States for influence among Haftar’s commanders and troops. The LNA is fighting against the United Nations-recognized Libyan Government of National Accord (GNA), which is supported by Qatar and Turkey.

On Tuesday, the Africa Command of the United States Department of Defense alleged that Russian pilots had flown military planes to Jufra, an LNA stronghold. The Americans claimed that the jets had been repainted in Syria to hide their Russian Federation insignia, before being flown first to Tobruk, in Libya’s east, and from there to Jufra. According to the Pentagon, the Russian planes were flown to Libya in order to provide air support to over 1,000 Russian mercenaries who are fighting alongside the LNA.

The mercenaries reportedly belong to the PMC Wagner (also known as the Wagner Group), a Russian security contractor with presence on the ground in Syria, eastern Ukraine, the Central African Republic, and elsewhere. Western officials allege that Russian private contractor firms like Wagner could not operate without permission from the Kremlin. According to recent reports, Wagner personnel have been participating in the LNA’s year-long effort to take Tripoli from the hands of the GNA and by doing so put an end to the Libyan civil war. But the offensive has not been going well in recent days, and Wagner forces were reportedly pushed back by Turkish- and Qatari-supported GNA troops.

The US Pentagon alleged that Moscow sent the Russian military aircraft to Libya in order to “provide close air support and offensive fires for the Wagner Group PMC that is supporting the LNA’s fight”. Other commentators have argued that the main purpose of the mission was to reach the outskirts of Tripoli and airlift the Russian mercenaries to safety. But Ahmed Mismari, a spokesman for the LNA, rejected reports of the arrival of Russian military aircraft to Libya as “media rumors and lies”. He said that all aircraft used by the LNA were “repaired […] old Libyan jets”. The Russian military has not commented on the allegations by the US Pentagon.