Ahead of next week's oil producers meeting in Vienna, where the possibility of expanding production will be discussed, an attack on two Libyan oil terminals has highlighted the volatility of the North African country's output. Militants on June 14 assaulted the Ras Lanuf and As Sidra oil terminals in Libya's Oil Crescent region , wresting control of them from the Libyan National Army (LNA) and taking nearly a quarter of the country's oil production offline. Remnants of the Benghazi Defense Brigades and the Petroleum Facilities Guards (PFG) under former PFG commander Ibrahim Jadhran conducted the assault, which resulted in two oil storage tanks catching fire and prompted the Libyan National Oil Corp. (NOC) to evacuate its personnel. Before the assault, exports through the ports had totaled about 240,000 barrels per day (bpd).