Donald Trump Issues 'Force Never Seen Before' Warning as US Casualties Reported in Iran Conflict

US President Donald Trump warned Iran overnight that the United States would respond 'with a force that's never been seen before' if Tehran retaliates, as the conflict intensified into Sunday 1 March and US casualties were reported.​

The warning came after ABC's This Week opened with the claim that the US and Israel had launched 'massive strikes', with the programme also reporting the death of Iran's supreme leader Ayatollah Ali Khamenei and describing the operation as 'Operation Epic Fury.' By mid morning, US Central Command said three US service members had been killed in action and five were 'seriously wounded' as part of Operation Epic Fury, adding that several others had sustained minor shrapnel injuries and concussions.

Trump has issued a public threat of unprecedented force if Iran hits back. CENTCOM has confirmed US fatalities and serious injuries, with identities withheld until next of kin are notified. Iran's foreign minister has framed his country's actions as self defence and rejected any US attempt to dictate limits.

Donald Trump's Threat And The Rising Stakes

The most arresting line in the past few hours is not a satellite image or a map of targets, but a sentence attributed to Donald Trump that landed like a slammed door. 'They better not do that. However, because if they do, we'll hit them with a force that's never been seen before,' ABC News reported, presenting the comment as the president's response to Iranian threats.​

On the same programme, Trump was shown saying the objective was 'to defend the American people by eliminating imminent threats from the Iranian regime,' a formulation that casts the strike as urgent rather than elective. ABC's coverage also repeatedly described the campaign in maximal terms, including its assertion that this was a 'war of choice to eradicate Iran's regime' and that the first strike 'yielded a significant victory with the death of Ayatollah Khamenei.'

Even in transcript form, you can hear the gap between the language of resolve and the language of consequence. CENTCOM's update was notably procedural, placing numbers and timing first, saying that as of 9.30am ET on 1 March three service members were killed and five seriously wounded, while 'major combat operations continue' and the response effort is 'ongoing.' It also said the situation was fluid and that names were being withheld until 24 hours after next of kin notification.

The transcript also places Trump at Mar a Lago, with ABC's White House correspondent saying he remained at his Florida resort that morning and would return to the White House later that evening.

Donald Trump And Iran's Response On The Record

Iran's Foreign Minister Abbas Araghchi used his interview on This Week to reject Trump's warning outright, not with bluster but with a lawyerly insistence on rights. 'We are defending ourselves whatever it takes, and we see no limit for ourselves to defend our people, to protect our people,' he told host George Stephanopoulos.​

He also offered an outline of what he said was the current governing procedure after Khamenei's death, describing a transitional council involving the president, the head of the judiciary, and a jurist of the Guardian Council, while a new supreme leader would be elected by the Assembly of Experts. Araghchi acknowledged the loss of commanders, calling it 'a fact', but argued that Iran's military capability remained intact and that retaliation began within hours.​

Araghchi accused the US and Israel of striking a school and said 148 girls students had been killed, calling it 'a war crime,' while the ABC correspondent narration said the US was 'investigating and working to verify that report' and that it would never deliberately attack civilians.​

On Capitol Hill, the same programme put Democratic Senator Adam Schiff on air to argue there was 'no basis' for a 'massive military campaign' aimed at regime change, saying Trump sought no authorisation from Congress and urging a vote on a war powers resolution introduced by named senators. Republican Senator James Lankford, in contrast, argued that Iran has been attacking Americans through proxies and that protecting Americans extends beyond US soil, while also saying it was up to the Iranian people to choose their leaders.​