Libyan oil is especially prized because of its low sulphur content, which means it produces much less pollution than other fuel oils.

With the lifting of sanctions against Libya, there is growing outside investment in Libyan oil and gas resources.

The majority (85%) of Libyan oil is exported to European markets.

She speculated that the west's interest in Libyan oil played a role in the decision.

Most recently, the conflict in Libya reduced exports of Libyan oil and gas.

Libyan oil is light, easy to refine and can be transported to Europe at reasonable cost.

Banning the sale of Libyan oil was not being contemplated, the diplomats said.

Western diplomats say the new sanctions under consideration include an embargo on Libyan oil, the mainstay of the country's economy.

Such planning was hampered by the fact that Libyan crude oil was of high quality and much in demand.

Though most Libyan oil went to Europe, all oil prices reacted.