US, Iran make "positive" progress during talks in Oman; to resume next week

At the same time, Iran and allied groups have been weakened by the military offensives Israel has launched across the region, including air strikes in Iran, during its war with Hamas after the Palestinian militant group Hamas attacked Israel from Gaza in October 2023.

Mikhail Ulyanov, Russia's ambassador to international bodies in Vienna, called the statements issued by both sides after the talks "encouraging".

Tehran approached the talks warily, sceptical they could yield a deal and suspicious of Trump, who has repeatedly threatened to bomb Iran if it does not halt its accelerating uranium enrichment programme - regarded by the West as a possible pathway to nuclear weapons.

While each side has talked up the chances of some progress, they remain far apart on a dispute that has rumbled on for more than two decades. Iran has long denied seeking nuclear weapons capability, but Western countries and Israel believe it is covertly trying to develop the means to build an atomic bomb.

"This is a beginning. So it is normal at this stage for the two sides to present to each other their fundamental positions through the Omani intermediary," Baghaei said.

Signs of progress could help cool tensions in a region aflame since 2023 with wars in Gaza and Lebanon, missile fire between Iran and Israel, Houthi attacks on Red Sea shipping and the overthrow of the government in Syria.