Libya’s NOC has managed to keep output above 1.2mn b/d since April. But such efforts are coming under increasing strain. Armed groups are moving in, a rival NOC is trying to sell oil and its decrepit infrastructure continues to dog output.

The pressure on Libya’s gravity-defying oil sector is starting to show. The country’s National Oil Corporation (NOC) on 13 June threatened to pull its staff from Libya’s 220,000 b/d-capacity Ras Lanuf oil terminal, accusing the...