Nuclear talks between Iran and the US have reached an impasse over Iran’s right to produce and stockpile low-enriched uranium. America first signalled that it was open to some enrichment before insisting that Iran must relinquish that right.

The future of high-stakes negotiations over Iran's nuclear program remains shrouded in uncertainty as the U.S. and Iran publicly clash over the terms of an interim agreement proposed by the Trump administration that is intended to pave the way for a longer-lasting deal.

Newsweek has reached out to the U.S. State Department for comment. Why It Matters. The remarks are the first time Tehran has commented on the content of the recent U.S. proposal,