They say Iran must abandon uranium enrichment, but this is one of our red lines. If talks are conditional on halting enrichment, they simply won’t happen," said Ali Velayati, senior adviser to Supreme

Iran said on Monday there would be no new nuclear talks with the United States if they were conditioned on Tehran abandoning its uranium enrichment activities. Washington and Tehran had been engaged in several rounds of negotiations seeking to strike a deal on the Islamic Republic’s nuclear programme,

If the negotiations must be conditioned on stopping enrichment, such negotiations will not take place,' said an advisor to Iran's supreme leader on Monday. Israel and Western nations accuse Iran of pursuing nuclear weapons,