The US is pushing Iran to agree to a 20-year moratorium on its nuclear activity, including uranium enrichment, as one of its conditions to reach a comprehensive deal to end their war.
Tehran responded with a proposal for a five-year suspension at the US-Iran talks held in Islamabad over the weekend, said two people briefed on the matter.
The negotiations ended with US vice-president JD Vance, who led the American delegation, blaming the Islamic republic for what he said was its unwillingness to commit to never developing a nuclear weapon.
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