The head of Iran’s nuclear negotiating team Abbas Araghchi said on Thursday that the next round of talks in Vienna could the final one, as the participants in the nuclear deal and the US must take their difficult decisions.

Araghchi said after the fifth round of talks in Vienna to revive the Iran nuclear deal, formally known as the JCPOA, delegations felt necessary to return to their capitals once again after 10 days of intensive negotiations.

Many hoped that this would be the final round, but delegations decided to return to their capitals to use one week of opportunity for consultations and then resume talks, Araghchi added.

He also said that the remaining disagreements have been discussed and solutions have been proposed, but these solutions should be reviews to choose the best one.

Iran’s stance remained unchanged, the top negotiator stressed, but what is important is that arrangements on the US return to the deal and Iran’s verification of sanctions removal and resuming full compliance to the JCPOA limitations on its nuclear program should be implemented in a manner agreed by both sides.

Iran’s Deputy Foreign Minister underlined that a great progress has been made in the talks, but there were still few critical disagreements to be solved.

He went on to say that the next round should be sensibly the final round if other sides conform to Iran’s stances, otherwise, there would be no deal or talks would continue.

Araghchi said that no timing has been set for the next round, but party decided to have one week break.