A general view shows the Hariqa oil port and loading installation on August 20, 2013 in Tobruk, Libya. Libya's navy has prevented a tanker from "illegally entering" Al-Sedra oil terminal in the east of the country, the army's general staff said, as protests paralysed several ports. The government is locked in a stand-off with striking oil installation guards, whom it accuses of trying to sell crude oil on their own account. Authorities have threatened to use force to prevent the sale of any oil that does not go through the proper channels. AFP PHOTO/MAHMUD TURKIA (Photo credit should read MAHMUD TURKIA/AFP/Getty Images)
