The American newspaper Politico quoted officials in the US administration as saying that the United States plans to put forward a new proposal this week with the aim of starting talks with Iran.
An informed source told the website that the US proposal calls on Iran to stop working with advanced centrifuges, and to stop uranium enrichment by 20%, in exchange for easing some economic sanctions.
And "Politico" reported that US and Iranian officials are aware that in the absence of a breakthrough during the next few weeks, it is unlikely that any progress will be achieved until next September at the earliest.
A senior Biden administration official declined to comment on this proposal, explaining Washington's willingness to reciprocate the nuclear deal.
He added that his country is also open to talking with international partners about the best way for this return, including taking a series of initial and reciprocal steps.
The Iranian position
Press TV quoted a senior Iranian official as asserting that Tehran will not stop uranium enrichment by 20% until all forms of US sanctions are lifted.
The Iranian official said that 20% enrichment is in line with Article 36 of the nuclear agreement.