Nearly half of Libya's GDP comes from crude sales. It's just a fraction of global production but crucial to the nation's economy.
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As Libya continues its slide into civil war, it's worth thinking about the impact the fighting is having on the country's oil industry, critically important to its economy. Control of five major oil terminals remains in dispute, with rebels fighting Qaddafi's forces holding Marsa el Hariga and Zueitina. Ras Lanuf (above) has been retaken by the government.