RIYADH, SAUDI ARABIA- NOVEMBER 17: Venezuelan President Hugo Chavez (C) and Iranian President Mahmoud Ahmadinejad (L) laugh as Saudi King Abdullah (R) looks on during the opening session of the third OPEC Summit on November 17, 2007 in Riyadh, Saudi Arabia. Venezuelan President Hugo Chavez started the summit by criticising US hostility to Iran and warning that crude oil prices could rise to $150 if the US was to attack Iran. Getty Images logo Getty Images 32 months ago

RIYADH, SAUDI ARABIA- NOVEMBER 17: Venezuelan President Hugo Chavez (C) and Iranian President Mahmoud Ahmadinejad (L) laugh as Saudi King Abdullah (R) looks on during the opening session of the third OPEC Summit on November 17, 2007 in Riyadh, Saudi Arabia. Venezuelan President Hugo Chavez started the summit by criticising US hostility to Iran and warning that crude oil prices could rise to $150 if the US was to attack Iran.