BBC: Venezuelan President Hugo Chavez warned oil prices could double if the US attacked Iran, as a key summit of oil exporters opened.
Mr Chavez told the summit of the Organisation of Petroleum Exporting Countries (Opec) the price of crude could reach $150 or even $200 a barrel.
Oil has been hitting record peaks of well over $90 a barrel as markets believe Opec will not boost production.
The Opec summit in Saudi Arabia is only the organisation's third in 47 years.
Saudi moderation
Mr Chavez kicked off the summit with a blistering attack on the US.
"If the United States was mad enough to attack Iran or aggress Venezuela again the price of a barrel of oil could reach $150 or even $200," he said. Chavez warning opens Opec summit (more)
Mark Alexander
