Qatari mediators have held talks with Iranian officials in an attempt to restart direct negotiations between Washington and Tehran, an official source familiar with the discussions told CNBC on Saturday.
Iran promised a "geographically unrestricted response" to any new attacks by the U.S.
Qatari mediators held more than 12 hours of talks in Tehran on Friday to reach a deal to avoid a possible resumption of American-led attacks on Iran after the U.S. midterm elections, the source said, speaking on condition of anonymity.
Axios first reported the talks, which it said are set to continue in the Qatari capital, Doha, on Saturday.
A preliminary agreement signed on June 17 between the U.S. and Iran to halt the fighting — which began on Feb. 28 with U.S. and Israeli strikes on Iranian targets — broke down weeks later.