The Washington Post takes a crack at exposing the involvement of Russian mercenaries fighting for Haftar's LNA forces. Better armed and trained than local forces, the Post claims these mercenaries are "introducing new tactics and firepower on the battlefield, threatening to prolong the most violent conflict..." in Libya since the Arab Spring.
While many countries are involved, including the UAE, Egypt and Turkey, Russian involvement "has altered the battlefield" according to a GNA commander.
It only makes sense Russia would seek to intervene - as the article describes Russian military and infrastructure agreements from Qaddafi's time worth over $4 billion as well as Libya's significant energy reserves which Russia seeks to profit from.
While earlier estimates placed the number of Russian mercenaries at around 300, new information suggests thousands of Russians on the ground arriving since September. These forces are not just support troops like in the past but are on the front lines - providing tactical support - especially sniper and artillery expertise the LNA lacks. The Russians are generally much better disciplined fighters than the local forces, and therefore more efficient. This efficiency is noticed by area doctors treating far more head and chest wounds than before, attributed to the Russians' accuracy.