Iran's top diplomat blamed Washington on Monday for the failure of talks after landing in Russia as part of a whirlwind diplomatic tour, with direct negotiations between the warring parties seemingly at an impasse.

Foreign Minister Abbas Araghchi made the remarks in St Petersburg, where he is expected to meet with Russian President Vladimir Putin, having sandwiched a trip to Oman in between visits to main mediator Pakistan over the past few days.

Islamabad played host to the first and only round of unsuccessful talks between Washington and Tehran, and Araghchi's visit had fanned hopes for fresh negotiations over the weekend, until US President Donald Trump scrapped a planned trip by his envoys Steve Witkoff and Jared Kushner.

"The US approaches caused the previous round of negotiations, despite progress, to fail to reach its goals because of the excessive demands," Araghchi said on Monday.

After calling off his emissaries' trip, Trump told Fox News that if Iran wanted talks, "they can come to us, or they can call us", though he has said the cancellation does not signal a return to hostilities.

In a sign that backchannel efforts were ongoing, the Fars news agency said Iran had passed "written messages" to the Americans via Pakistan spelling out red lines, including nuclear issues and the Strait of Hormuz.

Fars news agency said the messages were not part of formal negotiations, however.

US media outlet Axios – citing a US official and two other sources with knowledge of the matter – reported on Sunday that Iran had sent a new proposal to end the war centred on reopening the Strait of Hormuz and ending a US naval blockade there, with nuclear negotiations postponed for a later stage.

Iranian state news agency IRNA cited the report without denying it.

The ceasefire in the US-Israeli war with Iran has so far held, but its economic shock waves have continued to reverberate globally.

Iran has made passage through the strait operationally unsafe, cutting off flows of oil, gas and fertiliser and sending prices soaring, raising fears of food insecurity in developing countries.

In response, the US has imposed a blockade of Iranian ports in the waterway and beyond.

Trump faces domestic pressure as fuel prices rise following Iran's closure of Hormuz, with midterm elections due in November.

Polls show the war is unpopular among Americans.

The subject of the strait was on the agenda during Araghchi's trip to Oman, which lies on the other side of the waterway from Iran.

"The safe passage through the Strait of Hormuz is an important global issue. Naturally, as the two coastal countries of this strait, we must speak with each other so that our common interests are secured," Araghchi said from St Petersburg.

Russian and Iranian state media confirmed Araghchi would speak with Putin, citing officials from their respective governments.

Iran's Revolutionary Guards, however, have said they have no intention of lifting their market-shaking blockade, saying control of the Hormuz "and maintaining the shadow of its deterrent effects over America... is the definitive strategy" of Tehran. (AFP)



Edited by Tony Sabine