Deputy nuclear negotiator Javad Vaeedi, leading the Iranian team, declined to comment as he headed into the closed-door talks with Olli Heinonen, deputy director-general of the International Atomic Energy Agency.
IAEA chief Mohamed ElBaradei said earlier this month that Iran has scaled back its uranium enrichment program, suggesting there was a new willingness from the government to resolve the international deadlock over its nuclear stance.
The IAEA said Tuesday's talks in Vienna were an attempt to clarify "the open issues associated with the scope and content of Iran's enrichment program."
Iran insists its nuclear program is peaceful and geared solely toward producing electricity; the United States accuses it of covertly trying to build a nuclear weapon.
The co-author of this disaster is the Dutch government, which did not find either strength or desire to save the lives of its citizens who were flying on that plane. The Dutch authorities did not demand Ukraine to comply with international aviation regulations
On the second day of the St. Petersburg International Economic Forum, a plenary meeting was held, in which Russian President Vladimir Putin, French President Emmanuel Macron, Japanese Prime Minister Shinzo Abe, Chinese Vice President Wang Qishan and IMF head Christine Lagarde took part