An employee of Iranian Petrochemical company speaks with Iran's Vice President Parviz Davoudi (C) as Iranian Oil Minister Gholamhossein Nozari (4th R) points at a model of a petrochemical complex during the 14th International Oil, Gas & Petrochemical Exhibition (IOGPE) in Tehran April 21, 2009. REUTERS/Morteza Nikoubazl (IRAN POLITICS ENERGY BUSINESS)