Oil prices endure volatile week

World oil prices jumped to almost $70 a barrel during a shortened trading week, owing to heightened tensions over Iran


Prices fell later in the week, however, after Iranian President Mahmoud Ahmadinejad allowed 15 British sailors, held by Tehran for almost a fortnight for allegedly entering Iranian waters, to fly home.

Prices were also weighed down by the release of four foreign oil workers abducted last week in Nigeria, Africa