https://www.meforum.org/58334/generals-vs-islamists-in-libya
the chaotic Libyan battle is in fact a proxy war pitting clients of two key power axes in the Middle East against one another
Haftar and his LNA have benefited since 2014 from the support of Egypt and the United Arab Emirates.
Haftar appears also to have secured the support of Saudi Arabia.
Haftar is thus the ally and client of those broadly Western-aligned, authoritarian Arab states that find a common enemy in the Sunni political Islam of the anti-Western Muslim Brotherhood and its allies.
On the other side, Turkey and Qatar (and the now-deposed Sudanese president Omar al-Bashir) are strongly supportive of the Islamist and Muslim Brotherhood associated elements that share power with the government in Tripoli. Evidence has emerged of illicit arms shipments by Turkey to the forces in Tripoli.
Qatari support, meanwhile, is offered to Islamist militias and powerful individuals associated with the jihadi trend, most notably the Benghazi Defense Brigades
It is worth noting that Haftar and the LNA are currently in the unusual position of enjoying the tacit support of both Russia and the US.