Organization of the Petroleum Exporting Countries (OPEC) Secretary General Abdullah al-Badri, Secretary General of the International Energy Forum Noe van Hulst and Royal Dutch Shell Chief Executive Jeroen van der Veer (L-R) sit on a speakers podium during the Fourth OPEC International Seminar in Vienna March 18, 2009. The Fourth OPEC International Seminar takes place at the historic Hofburg palace from March 18 to 19. REUTERS/Herwig Prammer (AUSTRIA ENERGY)