The official said some of the countries invited to the talks at the foreign ministers' level included Pakistan, Saudi Arabia, Qatar, Egypt, Oman, and the United Arab Emirates.
"People are extremely angry," a former official said, adding a US attack could lead Iranians to rise up again. "The wall of fear has collapsed. There is no fear left."
Ayatollah Ali Khamenei said Iranian protesters carried out acts similar to Islamic State and blamed the US for creating the group.
A meeting between US and Iranian officials in Istanbul is seen as a best-case scenario, sources familiar with the plans said.
Satellite images show Iran covering and rebuilding parts of Natanz, Isfahan, and Parchin as Washington weighs possible military action.
Abbas Araghchi told CNN that miscalculations could trigger war with the US, while insisting Iran remains open to a deal on nuclear weapons.
The prevailing assessment in Israel did not point to immediate US action, with officials speaking in terms of weeks rather than days.
A new phishing scheme allows alleged IRGC-affiliated hackers to snap photos from the victim’s device every 5 seconds, record audio in three-second segments, and geolocate the device every two seconds.
“At this point, if this doesn’t happen, it will only embolden the regime,” said Saudi Defense Minister Prince Khalid bin Salman.
The comment follows US President Donald Trump telling reporters aboard Air Force One that Iran is "seriously" talking to the US and hinted at a deal to avoid military strikes.
Iran's current goal appears to be getting some countries that have influence with the United States to intercede on its behalf in order to avoid potential military action.
