It is not beautiful even on paper,” the source added, calling the plan deceptive and misleading in its presentation.
The comments come as US President Donald Trump has claimed – despite Iranian denials – that negotiations are under way between Washington and Tehran to reach an agreement to end the nearly one-month conflict.
The source explained that Iran has a clear understanding of what conditions it requires for a ceasefire and what it will reject.
The source also stated there have been no direct Iran-US talks since the war began but messages have been exchanged through a number of mediators.
The response from Iran came hours after sources confirmed to Al Jazeera that Pakistan had shared US ceasefire demands with Iran.
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Why are Trump and his officials escalating attacks on the US media?
Mediators are pushing for in-person talks between the Iranians and the Americans as early as Friday in Pakistan, Egyptian and Pakistani officials said on Wednesday.
According to Al Jazeera’s Osama Bin Javaid, Pakistan is in a unique position as a mediator because it has a Shia minority and relatively good ties with Iran, including cross-border trade.
It also has a defence agreement with Saudi Arabia and a Sunni majority that is closely aligned with the Gulf states, he said. The leader of Pakistan’s military also has a relationship with Trump, Bin Javaid added.
“So all of this puts Pakistan in a unique position to act between these two sides. It has no US bases on its soil, so Iran cannot accuse it of being used by the United States, and it is a state that has historically tried to mend relations between these actors,” he said.
Egyptian Foreign Minister Badr Abdelatty, meanwhile, said Cairo was ready to host any meetings related to Iran as long as they serve de-escalation.
Abdelatty said at a news conference that Egypt supports Trump’s initiative to negotiate with Iran.
On Iran’s response to the US plan, he said: “We have to continue our efforts. It’s all about diplomacy and negotiations.”
Turkiye has also been trying to position itself as a possible mediator. Harun Armagan, vice chairman for foreign affairs in Turkiye’s ruling AK Party, told the Reuters news agency that Ankara has been “playing a role passing messages” between Tehran and Washington.
