TEHRAN, April 18 (Xinhua) -- Iran's Deputy Foreign Minister Saeed Khatibzadeh said on Saturday that no date has been set yet for the second round of peace talks between Tehran and Washington, according to the Iranian Students' News Agency.

Although progress has been made in reaching an agreement in negotiations with the United States, obstacles still remain, he told reporters on the sidelines of the Antalya Diplomacy Forum, which kicked off in the Turkish city of Antalya on Friday. ■