Zebari's comments today to the Reuters news agency came as Iranian Foreign Minister Manuchehr Mottaki said such talks could be held soon, but that Washington should first officially ask for a second meeting.
The U.S. and Iranian ambassadors to Iraq, Ryan Crocker and Hassan Kazemi-Qomi, held a first round of talks in May -- the highest-level meeting between the two countries since 1980.
(Reuters, AFP, dpa)