Reuters Pictures
Angola's Oil Minister and OPEC President Jose Maria Botelho de Vasconcelos (L) and OPEC Secretary General Abdullah al-Badri address a news conference in the Organization of the Petroleum Exporting Countries (OPEC) headquarters following a meeting of OPEC oil ministers in Vienna September 10, 2009. OPEC agreed to leave its oil output targets unchanged at its meeting which ended in the early hours of Thursday.