Iran has publicly rejected a proposed US ceasefire deal, denying that peace negotiations have taken place between the two sides.
A report from the New York Times on Wednesday suggested that Washington had presented the Islamic Republic with a 15-point proposal to end the conflict, which began in February with a round of US and Israeli strikes.
This plan, the report stated, would have seen Iran give up its programme of uranium enrichment, dismantle its existing nuclear facilities at Natanz and Fordow, and accept limits on its ballistic missile capabilities.
In return, the US would lift crippling economic sanctions and assist in the development of a civilian nuclear energy project in the country.
However, Iran’s foreign ministry has denied that any such negotiations have taken place, saying no talks have been held with the US since the collapse of diplomacy in February.
Ministry spokesman Esmail Baqaei told the Fars news agency, part of Iranian state media, that Tehran had “made it clear [on Tuesday] there are no talks or negotiations between Iran and the US”.
"We’ve had a very catastrophic experience, I should say, of the US diplomacy,” he went on.
"We were attacked two times within a span of nine months when we were in the middle of a negotiating process to resolve the nuclear issue. So this was a betrayal of diplomacy.
"There has been no contact between Iran and the US in the past 24 days, and Iranian armed forces continue to defend the country’s territorial integrity.”
The Associated Press subsequently cited Pakistani officials saying that Tehran had been presented with the peace plan by Islamabad in its role as a mediator, and had dismissed it.
It comes after Trump claimed earlier in the week that “regime change” had already been secured in Iran and that his team was holding discussions with "the most respected" leader in Iran, which had yielded "major points of agreement" on "almost all points".
Channel 12's Amit Segal has since reported that this was a reference to Mohammad Bagher Ghalibaf, the speaker of Iran's parliament, and not Mojtaba Khamenei, who replaced his father as the country's supreme leader but has not been seen since the start of the war.
Ghalibaf and Iran's foreign ministry have denied that any such negotiations took place, accusing the president of trying to "manipulate" financial markets with "fake news" after the war prompted a spike in oil prices and instability on stock markets.
Nonetheless, Trump claimed that Tehran has agreed to halt its programme of uranium enrichment, to rule out the prospect of developing a nuclear bomb and to hand over its stockpile of 60 per cent enriched material.
Yet Washington has still confirmed the deployment of extra troops to the region, leaving open the possibility of American boots on the ground.
Around 3,000 troops from the 82nd Airborne Division have been dispatched to support between 3,000 and 5,000 marines already deployed from the Pacific.
In total, more than 50,000 troops have been stationed under the Central Command (Centcom) in the region.
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