Iran has announced it is examining the latest US proposal received from mediator Pakistan in talks to end the Middle East war, despite Washington and Tehran trading threats over resuming attacks.
It has come after US President Donald Trump told reporters that Washington was in the "final stages" of negotiations with Tehran.
"We'll either have a deal, or we're going to do some things that are a little bit nasty," Trump said.
Iran's foreign ministry spokesman Esmaeil Baqaei has confirmed that the Islamic Republic has received the American perspective and is currently examining it.
He reiterated Iran's demands, including the release of frozen assets and an end to the US blockade on Iranian ports.
A ceasefire on 8 April has brought a halt to the US-Israeli conflict with Iran, but a war of words has continued.
'Regional war'
Iran’s Revolutionary Guards warned Wednesday: "If the aggression against Iran is repeated, the promised regional war will this time spread far beyond the region."
The Trump administration is under pressure as rising energy costs bite at home.
While the ceasefire halted fighting, it has not reopened the vital Strait of Hormuz.
Iran's navy said it allowed 26 vessels to transit the strait over 24 hours following "coordination".
Meanwhile, the United States has maintained its own blockade on Iranian ports, with US Central Command stating Marines boarded and redirected an Iranian-flagged oil tanker on Wednesday.
The UN's Food and Agriculture Organisation has warned of a "severe global food price crisis" due to the ongoing closure of the strait, which handles a third of global fertiliser.
