Over the past week, the oil price appears to have moved in sync with events in Libya. When Gaddafi looked close to quashing the revolution, prices dropped with the expectation that Libyan oil would start flowing again. Every time the rebels have been given a boost, oil prices have gone back up.

So last Tuesday, as pro-Gaddafi forces neared Benghazi, oil dropped 3.9 per cent. But when UN Resolution 1973 was passed on Thursday, it went up 3.5 per cent. It fell again after Gaddafi announced a ceasfire, but rose as evidence came in of his attacks on rebel-held towns. Today, as markets react to the concerted bombing campaign over the weekend, oil has continued to rise, taking Brent back over $115 a barrel.

Amid this turmoil, the question remains, why is oil moving at all? Of course, Libya is in the top dozen oil exporting countries, but it still only exports about 2 per cent of world oil supply, and what has been lost in the last few weeks has largely been accounted for by increased Opec production.