Top Iranian and U.S. negotiators resumed talks on Sunday to address disputes over Tehran's nuclear programme, Iranian state media reported, in a push for progress as Washington hardens its stance ahead of U.

An Iranian official told CNN that recent indirect talks with the United States aimed at addressing Tehran’s nuclear program and lifting sanctions were “not genuine” from the American side and were likely designed from the outset as a “trap to draw the situation toward tension.

Foreign Minister Abbas Araghchi hailed enrichment as a national achievement just before the fourth Iran–US round in Muscat, while Washington has maintained that Iran's enrichment facilities have to be dismantled.