President Donald Trump said Iran has a "last chance" to accept a nuclear deal with the US, or it will face a "regime change". He claimed to have canceled what would have been "the biggest attack" since World War II to give diplomacy a last chance. Speaking at the White House, Trump said negotiations with Tehran are ongoing at the request of regional powers, although Iran has categorically denied any talks with Washington, creating a high level of uncertainty over whether any progress or military conflict is imminent.

Trump said he had halted a major US military operation against Iran, described as the biggest attack since World War II, due to the effects of diplomatic progress and appeals from regional allies, but warned that time is running out for a deal. Trump said, "I think maybe we can get something, but I want to give them a last chance before a regime change," "to sign a good document... this is Iran's last chance."

Trump emphasized that negotiations between the US and Iran are "going on now" and said the talks are being held at the request of Saudi Arabia, the United Arab Emirates, and Qatar, in addition to Iran. He also claimed to have canceled the attacks that would have been "the biggest attack since World War II" because diplomacy seemed to be moving forward. Tehran denied the president's statement on Monday. Iran's foreign ministry said there are no direct talks with Washington and said its current negotiations are only with Oman regarding temporary maritime security arrangements in the Strait of Hormuz.

The open denial highlighted the high level of uncertainty surrounding Trump's latest diplomatic efforts, where Washington is presenting talks as active while Tehran is denying their existence. In response to Iran's statements, Trump accused the country's leadership of being "extremely dishonest" and dismissed its statements about the Strait of Hormuz as "traditional nonsense". The latest exchange of words reinforces Trump's strategy of combining military pressure with diplomatic offers in an attempt to revive a nuclear deal with Tehran. The US president has repeatedly issued deadlines and warned of military consequences, but previous rounds of negotiations have stalled over issues such as the lifting of sanctions, uranium enrichment, and broader regional security concerns.

The Strait of Hormuz remains at the center of the dispute, as the narrow waterway handles nearly a fifth of the world's oil supply, making any threat to its security a major risk to energy markets and geopolitical stability.