Iran's Oil Minister Gholamhossein Nozari, Algeria's Energy Minister Chakib Khelil,

Iran's Oil Minister Gholamhossein Nozari, Algeria's Energy Minister Chakib Khelil, 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.