Iran's foreign minister is to visit ally Russia this week to discuss nuclear negotiations with the United States, ahead of a new round of talks between the foes planned for Rome.
On Saturday, Abbas Araghchi held talks with US Middle East envoy Steve Witkoff in Oman, the highest-level negotiations since the collapse of a 2015 nuclear accord.
US President Donald Trump, who withdrew from the accord, has thrown Iran back into the spotlight since his return to the White House in January.
In March, he sent a letter to Iran's supreme leader Ayatollah Ali Khamenei, calling for nuclear talks while warning of possible military action if Tehran refused.
Western countries, including the United States, have long suspected Iran of pursuing nuclear weapons, an allegation Tehran has consistently denied, maintaining that its programme was solely for peaceful purposes.
Russia, a close ally of Iran and party to the 2015 deal, and China have held discussions with Tehran in recent weeks over its nuclear programme.
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