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.

American and Iranian officials have begun their second round of indirect nuclear talks in Rome as the Trump administration weighs diplomacy against possible military action.

The foreign ministry of Oman, which is mediating the nuclear negotiations between the United States and Iran, said the two sides were seeking an agreement that guarantees the Islamic republic does not possess nuclear weapons.