Iran's Fars News Agency published what it described as the five core conditions Washington has submitted in response to Iran's negotiating proposals.
The conditions include the transfer of 400 kilograms (181.4 miles) of highly enriched uranium (HEU) to the United States, the continuation of only a single Iranian nuclear facility, no payment of war compensation, and no release of frozen Iranian assets.
Meanwhile, Iran's Armed Forces spokesperson issued a sharp warning that any resumed U.S. strikes would be met with "more crushing and severe blows."
Iranian Foreign Ministry spokesman Esmail Baqaei also accused Washington of following "Goebbels' infamous dictum."
According to Fars News Agency, Washington's response to Iran's proposals includes:
Fars cited analysts saying the U.S. proposal sought to achieve through diplomacy "goals it was unable to achieve during the war," and that even if Iran met all five conditions, the threat of renewed U.S. and Israeli military action would remain.
The Iranian media also reported Tehran's five confidence-building preconditions for any negotiations:
According to informed sources cited by journalist Sara Massoumi, Iran conveyed its views to the Pakistani side last night after receiving a set of proposals via the Pakistani mediator.
Iran's Armed Forces senior spokesperson Brigadier General Shahram Iranshahr, identified in both Fars and Tasnim as "Sardar Shekarchian," said in response to Trump's threats: "The repetition of any act of stupidity to compensate for America's disgrace in the third imposed war against Iran will result in nothing but more crushing and severe blows for that country."
"The desperate American president should know that if his threats are realized and Islamic Iran is attacked again, that country's assets and crumbling army will face new, offensive, surprising, and storm-like scenarios and will sink into the quagmire of its own making, which is the result of the adventurist policies of that same president," he added.
Iranian Foreign Ministry spokesperson Esmail Baqaei posted, X: "The next grand lie being rolled out to justify their illegal 'war of choice' is the claim that they are 'preserving peace and stability in global energy markets.'"
"In reality, it was the reckless warmongering of the U.S. and Israeli regimes that shattered promising diplomatic processes and, through an unprovoked military aggression against Iran, deliberately injected insecurity into vital energy routes, only then to accuse Iran of destabilization, to put into practice Goebbels' infamous dictum: 'Accuse others of what you yourself are doing.' They create a desolation and call it peace," the Iranian foreign ministry spokesperson stated.
Regional tensions have escalated since the U.S. and Israel launched strikes against Iran on Feb. 28.
In response, Tehran retaliated with strikes targeting Israel as well as U.S. allies in the Gulf, including the UAE, along with the closure of the Strait of Hormuz.
A ceasefire took effect on April 8 through Pakistani mediation, but talks in Islamabad failed to produce a lasting agreement.
U.S. President Donald Trump later extended the truce indefinitely.