On August 1, Iran says it remains "optimistic" that the negotiation process will lead to "a logical and reasonable outcome".

"As Iran, we stand ready to conclude the negotiations in a short order, should the other side be ready to do the same."

She said at least eight other prisoners in Iran are currently at risk of having their fingers amputated.

Washington has walked back earlier charges of an imminent weapon sale to Russia

Iran has since ramped up some nuclear activities, putting a ticking clock on an attempt to return to a deal in talks between Western powers and Tehran in Vienna.

France is among world powers trying to revive a 2015 nuclear deal with Iran that the previous U.S. administration quit and which Israel opposed, deeming its caps insufficient.

Foreign Minister Hossein Amir-Abdollahian had said Iran was "serious" about finalising a deal in Doha, but that it wouldn't cross its "red lines".

Tehran for its part said its focus was on sanctions relief, not directly mentioning the nuclear deal.

Russia played a key role in that deal, taking charge of Iran's excess enriched uranium stocks beyond those permitted under the agreement.

The US decided again to prolong and delay the agreement and went to the (IAEA) board of governors meeting with the delusion of using leverage

The United States is pursuing the path of meaningful diplomacy to achieve a mutual return to compliance with the Joint Comprehensive Plan of Action

The Guards accused "Zionists" of being behind the high-profile assassination and vowed revenge.