President Trump on Sunday flatly rejected Iran's response to his administration's peace proposal, calling it "TOTALLY UNACCEPTABLE" in a Truth Social post that signals the diplomatic window between Washington and Tehran may be closing fast.
"I have just read the response from Iran's so-called 'Representatives.' I don't like it, TOTALLY UNACCEPTABLE!" Trump wrote, as The Hill reported. The blunt dismissal came hours after Iran's state-run Islamic Republic News Agency confirmed that negotiators in Tehran had submitted their formal reply to the U.S. proposal.
The breakdown centers on the same issue that has defined the standoff for months: Iran's nuclear program. The Trump administration proposed that Iran agree to a moratorium on uranium enrichment in exchange for the United States dropping sanctions. Both sides would also lift restrictions on shipping through the Strait of Hormuz. Iran's answer dodged that demand entirely, and instead offered a counterproposal that pushes nuclear talks down the road.
Iran's response, relayed through Pakistani intermediaries, centers on an end to the fighting and a gradual reopening of the Strait of Hormuz. Nuclear issues, Tehran insisted, would be negotiated over the next 30 days, not addressed up front as the administration demanded.
The Wall Street Journal reported Sunday that Iran's reply does not adhere to the administration's demands on uranium enrichment. Under Tehran's plan, some enriched uranium would be diluted, while the rest would be transferred to a third country. But there was a catch: if negotiations fail or the United States later exits the agreement, that uranium comes back to Iran.
That conditional return clause guts the core purpose of any nonproliferation deal. It amounts to a temporary loan of nuclear material, not a permanent surrender of it, and it hands Tehran a built-in escape hatch.
AP News reported that Iranian state media went further, characterizing the U.S. proposal as a demand for surrender. Tehran's counteroffer reportedly included demands for war reparations, an end to sanctions, the release of seized assets, and full sovereignty over the Strait of Hormuz.
Trump accused Tehran of "playing games" with the United States for nearly 50 years, adding: "They will be laughing no longer!"
Pakistani Prime Minister Shehbaz Sharif confirmed Sunday that his government received Iran's response. Pakistan has served as the mediating channel between Washington and Tehran, with Sharif, army chief Asim Munir, and Foreign Minister Ishaq Dar working to broker discussions between the two capitals.
The diplomatic architecture itself tells a story. Iran and the United States are not talking directly. Every proposal and every reply moves through Islamabad, adding delay and ambiguity to a negotiation where both sides already distrust each other. Trump earlier pulled envoys Steve Witkoff and Jared Kushner from an Islamabad trip, citing Iran's internal disorder, a move that signaled growing frustration with the pace and seriousness of Tehran's engagement.
Iranian Foreign Minister Abbas Araghchi and Parliament Speaker Mohammad Bagher Qalibaf have led the negotiations on Tehran's side. But Araghchi's public posture has been anything but conciliatory. On Friday, just days before the formal response landed, he posted on X that Iran will "never bow to pressure" and that the Iranian military retains "1,000%" readiness to "defend our people."
That kind of rhetoric, delivered while your negotiators are supposedly crafting a peace deal, tells you everything about how seriously Tehran is treating the process.
The conflict between the United States and Israel on one side and Iran on the other began on February 28. Since then, the Iranian military has threatened non-allied countries from transiting the Strait of Hormuz and laid mines in the waterway, one of the world's most critical shipping lanes. The U.S. Navy responded by blockading Iranian ports beginning April 13.
Trump had previously announced the Strait of Hormuz blockade and described Iran as being "in very bad shape." That assessment framed Washington's leverage heading into negotiations: Iran's economy, already battered by sanctions, faces further strangulation from a naval blockade cutting off its oil exports.
Axios reported Wednesday that a 30-day timeline was outlined in a memo the administration submitted to Tehran, a deadline that now looks increasingly meaningless if the two sides cannot agree on first principles.
Just The News reported that Iran sought a comprehensive agreement covering multiple regional conflicts, including fighting involving Hezbollah in Lebanon, along with guarantees for maritime shipping security. In other words, Tehran wants to widen the negotiation, folding in regional proxies and strategic assets, rather than narrow it to the nuclear question the administration considers paramount.
The gap between the two sides is not a matter of fine print. It is a fundamental disagreement about what any deal must accomplish.
The Trump administration has been clear: Iran's nuclear program is the issue. Everything else, the Strait of Hormuz, the ceasefire, sanctions relief, flows from that. Iran wants to treat the nuclear question as one item on a long menu. Washington treats it as the price of admission.
The New York Post reported that U.S. Ambassador to the UN Mike Waltz called dismantling Iran's nuclear program a "very clear red line" for Trump. Israeli Prime Minister Benjamin Netanyahu said the conflict cannot end while Iran still possesses enriched uranium, adding that Trump wants to "go in" to Iran to remove it.
Trump himself, when asked about Iran's nuclear materials, said simply: "We'll get that at some point."
The Washington Examiner noted that although a ceasefire signed on April 8 remains in effect, the broader conflict is far from resolved. Rising U.S. gas prices reflect the economic toll of the standoff, and Netanyahu's comments suggest Israel sees no path to lasting peace without addressing the enrichment question head-on.
Iran's counterproposal fits a pattern that American policymakers have watched for decades. Tehran negotiates to buy time. It offers partial concessions laced with reversibility clauses. It demands preconditions that shift the burden onto the other side. And it uses third-party mediators to slow the clock while its centrifuges keep spinning.
Trump had previously declared the Iran conflict "very close to being over" and said Tehran was eager for negotiations. That optimism now looks premature, or perhaps it was always a pressure tactic designed to box Iran into a faster timeline.
Either way, Sunday's rejection puts the ball back in Tehran's court under circumstances that are considerably less favorable than they were a week ago. The naval blockade continues. The ceasefire holds but carries no guarantee of permanence. And the president of the United States has publicly said the response is unacceptable.
The Hill reached out to the White House for comment. Meanwhile, House Republicans have already blocked Democratic efforts to restrict Trump's Iran war powers, ensuring the president retains full flexibility to escalate if diplomacy collapses.
The open questions are serious. What specific enrichment demands did Iran's response fail to meet? Will Pakistan continue as mediator, or has that channel exhausted its usefulness? Does the 30-day timeline in the administration's memo still apply, or did Sunday's rejection reset the clock entirely?
None of those answers are clear yet. What is clear is the distance between the two positions. The United States wants Iran's nuclear program dismantled as the foundation of any deal. Iran wants to talk about everything except its nuclear program, and wants its uranium back if things fall apart.
That is not a negotiation. It is a stall. And Trump, whatever his next move, has made plain he sees it the same way.
Regimes that have spent five decades playing games with American diplomacy should not be surprised when an American president finally stops playing along.
