The United States and Iran are on Saturday holding talks on Tehran's nuclear programme, for the first time since President Donald Trump cancelled a 2015 deal. Hosted by Oman, the meeting is aimed at reaching a new agreement on Iran's nuclear facilities.
In the lead-up to the talks, both sides have engaged in a war of words that saw Trump last month send a letter to Iran's supreme leader Ali Khamenei threatening military action if negotiations fail.
