In this April 15, 2008 file photo, Iranian oil technician Majid Afshari makes his way at the oil separator facilities in Azadegan oil field, near Ahvaz, Iran. Iran, OPEC's second-largest producer, has completely stopped conducting oil transactions in U.S. dollars in a concerted attempt to reduce reliance on Washington at a time of tension over Tehran's nuclear program and suspected involvement in Iraq.
(AP Photo/Vahid Salemi, File)