Diplomats from the European Union, particularly Britain, France, and Germany, have talked with their Iranian country's on several occasions, since Donald Trump withdrew the U.S. from the 2015 accord between six world powers and Iran on May 8. Rather, the 12 demands, along with the threat of economic sanctions, are part of Washington's aggressive negotiation strategy and are meant to increase Tehran's fears that regime change might eventually occur.
Signatories Britain, France, Germany plus the European Union, Russia and China have been trying to salvage the deal after Trump's decision but Iran has warned that if it suffers as a result the reintroduction of U.S. economic sanctions, it could walk away from the accord.
World powers and signatories have since rallied around the accord, which imposed curbs on Iran's nuclear programme in exchange for the lifting of punishing economic sanctions.
He added that "practical solutions" were required to address Iran's concerns over its oil exports, banking flows and foreign investments in the country.
"The next step is to find guarantees for that package", he said, adding that Iran needed specifics on how that would happen by the end of May.
After Friday's meeting, Iranian Deputy Foreign Minister Abbas Araqchi told reporters discussions would continue.
"We made it very clear today that there are things that will take more time", a senior European Union official said. This was announced at the end of the meeting by Permanent Representative of the Russian Federation to International Organisations in Vienna Mikhail Ulyanov, who represented the Russian delegation.
Europe to exempt its firms from USA sanctions on Iran
The Commission also proposes to allow the European Investment Bank (EIB) to facilitate investment by European companies in Iran. The measure represents the first practical step towards saving the Iran nuclear deal taken by the EU.
"I must tell you that the JCPOA is a major worldwide asset".
If it pulls out of the deal, Iran would likely revert to its nuclear doctrine before the agreement or maybe even escalate its activities, the official said.
He added that the possibility of referring back to the matter back to the United Nations "was not discussed during this meeting". Its chief, Yukiya Amano, briefed participants before Friday's meeting.
According to a report seen by Agence France-Presse (AFP) on Thursday, the International Atomic Energy Agency (IAEA) believes Iran is still abiding by the deal's key restrictions on its nuclear facilities in return for relief from damaging economic sanctions. They have said that as long as Tehran meets its commitments, they will stick to the deal.
Khamenei said that for Iran to remain in the current nuclear agreement, the European powers who are a part of it must issue a resolution condemning the USA for violating the deal and stand against any US sanctions as well as guarantee the sale of Iranian oil.
The unnamed senior Iranian official rejected any attempt to link the JCPOA to other such issues. "We hope that our government will be able to secure the necessary guarantees in the negotiations, as one can not rely on those who vacillate and speak contradictory words", IRNA quoted Ali Akbar Velayati, Iran Supreme Leader's adviser for global affairs, as saying. "We'll try to cling to the deal, but ... we're under no illusions".
He also stated that any effort that would try and expose the corrupt government officials residing within the Iranian government will be met with support from the Trump administration.