Abbas Araghchi is an Iranian politician is the country's current foreign minister.
US-Iran talks were focused on sanctions against the Islamic Republic and wars in the Middle East, according to an Omani source.
Iran expresses skepticism over upcoming US talks on its nuclear program, insisting on indirect negotiations and demanding concrete gestures before direct discussions.
US President Donald Trump said on Monday that Iran would be in "great danger" if ongoing direct talks between the US and the Middle East country fail.
Tehran reiterated its stance on not negotiating directly while under pressure, but is open to indirect talks, Araghchi was reported as saying.
The potential deal between Armenia and Azerbaijan could help pave the way for more deals.
Iran’s leadership sees proxies in Lebanon, Yemen, and elsewhere as a lost investment, possibly shifting focus to diplomacy with Russia and China.
Trump pushes for a new nuclear deal with Iran to avoid military action, but Khamenei rejects talks, calling it a deception as US sanctions pressure Tehran.
Araghchi said that Iran was not opposed to talks out of "stubbornness" but rather as a result of history and experience.
Iran's Supreme Leader Ayatollah Ali Khamenei rejected Trump's letter last week as deceptive, saying Trump's excessive demands would 'tighten the knot of sanctions and increase pressure on Iran.'
"Iran's position regarding nuclear talks is clear and we will not negotiate under pressure and sanctions," Araghchi said.