From Al Jazeera. Any opinions expressed are those of the authors, and do not necessarily reflect the views of Libya Business News.
Forces loyal to renegade Libyan General Khalifa Haftar have seized a fourth oil port, Brega, completing their takeover of vital installations in the North African country's "oil crescent".
The US and five other nations said the oil belongs to the Libyan people and called on the rebel fighters to avoid action that could damage Libya's energy infrastructure.
Al Jazeera’s Victoria Gatenby explains: