Both Turkey and Russia have recently come under fire for transferring thousands of mercenaries to opposing sides of the war.

On Saturday massive explosions rocked Tripoli's only functioning international airport after Haftar's Libyan National Army (LNA) fired "dozens of rockets" on the sprawling complex, reports Al Jazeera. 

Images of the attack showed huge fireballs at Mitiga International Airport reaching into the sky, also as jet fuel tanks at the airport were also directly hit, according to a statement from Libya's National Oil Corp (NOC).