Iran’s chief negotiator Ali Bagheri Kani is due in the Qatari capital of Doha to resume stalled talks on the removal of sanctions.

Talks to revive the 2015 Iran deal, known as the Joint Comprehensive Plan of Action, JCPOA, remain stalled after a year of intensive diplomacy.

The US special envoy for Iran, Robert Malley, has acknowledged once again that abandoning the 2015 Iran deal did not serve Washington’s interests, but said the prospects of reviving the agreement are “tenuous at best.”

Russia’s lead negotiator says the intensive negotiations in Vienna, aimed at putting the 2015 Iran nuclear agreement back on track, go on “almost non-stop.”

In a volte-face, Washington delinks the release of American prisoners by Iran from Vienna talks on the revival of the 2015 Iran nuclear deal through talks in Vienna.

Progress has been reported on talks concerning Iran’s nuclear commitments but there are still differences when it comes to the removal of US sanctions and the Iranian demands for verification and guarantees.

The US has once again threatened Iran with considering “other options” if negotiations in the Austrian capital fail to restore the 2015 agreement.

The US delegation is scheduled to travel to Austria over the weekend to join the remaining signatories to the JCPOA for the new round of talks on the removal of American sanctions.

The United States has threatened to look at “all options” against Iran, risking a backlash ahead of the Vienna talks.

President Raeisi says the United States and the Europeans are in a crisis of decision-making concerning the Vienna talks.