A second round of negotiations between Iran and the United States over Tehran’s rapidly advancing nuclear program ended Saturday after several hours of talks, Iranian state television reported. There was no immediate readout on how the talks went at the Omani Embassy in Rome’s Camilluccia neighborhood.

That the talks are even happening represents a historic moment, given the decades of enmity between the two countries since the 1979 Islamic Revolution and the U.S. Embassy hostage crisis.

The United States and Iran are set to resume high-stakes talks Saturday on Tehran's nuclear programme, a week after an initial round of discussions that both sides described as "constructive".