WTO conference closes without 'substantive agreements' -Director General

BUENOS AIRES, Dec 13 (Reuters) - The World Trade Organization's biennial ministerial conference closed on Wednesday without any "substantive agreements" among the 164 members, Director General Roberto Azevedo said at the event's closing ceremony.

"Progress was going to require a leap in members' positions. We didn't see that," Azevedo said. "We need to do some real soul-searching." (Reporting by Luc Cohen, Tom Miles and David Lawder; Editing by Jonathan Oatis)