Iran is willing to return to the negotiating table with the U.S., "the sooner the better," but must be convinced the talks aren't cover for further military action, Tehran's nuclear negotiator Kazem Gharibabadi said on Wednesday.

President Donald Trump has issued a fresh attack warning to Iran "if necessary" after Iranian Foreign Minister Abbas Araghchi stated that Tehran "cannot give up" nuclear ambition. Trump ordered strikes on three Iranian nuclear enrichment sites,