All participants in the negotiations in Vienna to restore the Joint Comprehensive Plan of Action (JCPOA) on Iran's nuclear program seek to achieve a reliable and stable agreement.

The Islamic Republic Foreign Ministry spokesman Saeed Khatibzadeh said this on Monday, speaking at a briefing in Tehran, IRNA news agency reported.

He said that there is a positive atmosphere at the ongoing consultations in Vienna, and there is progress on four issues under discussion: lifting sanctions, the nuclear dossier, the verification mechanism and obtaining guarantees.

According to the Iranian diplomat, the parties involved in the talks do not discuss or accept anything beyond the JCPOA agreement.

For his part, Iranian Foreign Minister Hossein Amir Abdollahian said to the national broadcaster that the talks in Vienna are aimed at ensuring a responsible return of the United States to its obligations under the nuclear agreement. He said there was an informal exchange of messages between Tehran and Washington.

On January 3, the eighth round of talks resumed in the Austrian capital after a New Year's break, with the goal of restoring the JCPOA to its original form and bringing the US back into this multilateral agreement. Following a meeting of the Joint Commission of Iran and the five international mediators (Russia, Britain, Germany, China and France), the sides agreed to accelerate the process of working on the draft agreement and complete it by early February.