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.

During a State Department press briefing on Tuesday, spokesperson Tammy Bruce was asked about nuclear talks with Iran.

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,

The Iranian government continues to insist that enrichment is a "matter of national pride," and any nuclear capabilities would be used for scientific purposes rather than weapons.

Iran has no plans to abandon its nuclear programme including uranium enrichment despite the "severe" damage caused by US strikes to its facilities, the country's foreign minister said ahead of