Iran's Khamenei doubts US nuclear talks will lead to agreementBut ahead of another round scheduled for this weekend, Iran's chief negotiator rejected his US counterpart's assertion that it would have to commit to stop producing enriched uranium, which can be used to make reactor fuel but also nuclear weapons. Iran's Supreme Leader has expressed doubt that nuclear talks with the US will lead to a new agreement, saying it had made "excessive and outrageous" demands on uranium enrichment. Iran insists its nuclear activities are entirely peaceful and it will never seek to develop or acquire nuclear weapons. Khamenei said nuclear talks under Raisi's predecessor, the moderate cleric Hassan Rouhani, had failed to achieve results, and that he did not think there would be any breakthrough under his successor, Masoud Pezeshkian, who is a reformist. "Saying they will not allow Iran to enrich is a big mistake.