Greek authorities impounded Iranian flagged tanker carrying oil earlier this month citing US sanctions on Iran. The United States later confiscated the oil.

Iranian Foreign Ministry spokesman says the country’s red lines have been fully observed in the course of Vienna talks on the revival of the 2015 nuclear deal.

A senior Iranian diplomat says existing gaps on the remaining issues at the Vienna talks must be closed before the revival of the Iran deal.

Iran’s top security official says Washington’s proven disloyalty to its own signature is the most significant threat to any agreement that would be reached in Vienna.

Iran says the complete removal of US sanctions is its “red line” during the course of negotiations with the remaining JCPOA signatories 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.

Iran says it seeks a “lasting and reliable agreement” out of the ongoing Vienna talks, stressing that a temporary deal is not on the agenda at all.