Libya warned Sunday of the risk of a humanitarian and environmental disaster after eight fuel tanks caught fire amid heavy fighting near Tripoli’s international airport between rival militias, pushing the oil producer deeper into chaos. Rockets fired by one of Libya’s militias hit Tripoli’s main fuel depot near the airport Saturday, setting a gasoline tank ablaze, but firefighters deployed to tackle the fire were forced back by the militia fighting. The fire rapidly spread to seven other tanks, increasing the risk of an explosion at the site, which contains 90 million liters (almost 24 million gallons) of fuel and cooking gas. “Since the morning firefighters from Brega Petroleum Marketing Co. have been trying to enter the depot to control the fire […]