The ceasefire between Iran and the United States appeared under threat on Monday as US President Donald Trump denounced a "stupid proposal" from Tehran.
Trump called the Iranian proposal a "piece of garbage" and warned that the halt in fighting is on "life support."
Diplomatic efforts to reach a peace deal between Tehran and Washington have stalled in recent weeks despite a ceasefire lasting over one month.
A second round of direct negotiations in Pakistan has failed to materialize despite several attempts.
Iranian state media reported that the plan presented by Iran calls for US reparations for war damage.
Tehran is also demanding full sovereignty over the Strait of Hormuz, an end to sanctions against the country and the release of seized Iranian assets.
According to reports, the dispute over Iran’s nuclear programme - a key stumbling block in negotiations - played no part in the latest proposal.
Trump said Iran agreed in recent days to allow the US to remove enriched uranium from the country. "But they changed their mind because they didn't put it in the paper," he added.
