Iran and the US completed the first round of peace talks in Switzerland despite a brief disruption after Iranian negotiators protested American President Donald Trump's threat of renewed military action against Tehran.
The talks at the Bürgenstock resort entered a tense phase after Trump warned Iran to rein in its allies in Lebanon or face fresh US strikes.
Iranian state media said the delegation temporarily left the negotiating venue in protest and raised objections directly with the American side over the remarks.
Technical talks between the two sides will continue through the week, with Qatar and Pakistan mediating the negotiations.
The parties agreed to set up a direct communication line to prevent misunderstandings and incidents during negotiations and help ensure the safe movement of commercial shipping through the Strait of Hormuz.
A new de-confliction cell involving the parties and Lebanon, facilitated by Qatar and Pakistan, will work to ensure compliance with the agreed cessation of military operations in Lebanon.
