An Iranian supertanker carrying about 2 million barrels of condensate this week began discharging at Venezuelan state-run oil company PDVSA's main oil port. Last year, the two state companies that are under U.S. sanctions exchanged some 4.82 million barrels of condensate for 5.55 million barrels of heavy crude, mostly transported in Iran-flagged vessels. Condensate is an extremely light oil.