NEED TO KNOW

• Trump vowed "all hell will rain down" if Iran pursues a nuclear weapon
• He says the deal bans Iran from developing, buying, or acquiring one
• UN inspectors stopped verifying inside Iran in February

EVIAN-LES-BAINS, France (TDR) — President Trump warned Tuesday that "all hell will rain down" on Iran if it acquires a nuclear weapon, framing the threat as the deal's enforcement mechanism. The harder question is who would see the violation coming.

The big picture: Speaking at the G7 summit beside Qatar's emir, Trump said the agreement bars Iran from building a bomb in every form. He recounted personally tightening the language during talks.

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• Trump said he insisted the text cover purchase, not just development — "you're not gonna develop, but you're not gonna buy either."
• He called the ban airtight: Iran will "not develop, purchase, buy, or any other thing."
• The consequences for cheating, he said, would be "the ultimate consequences."

Why it matters: A tripwire only deters if someone can trip it. The body that would verify Iranian compliance is not currently operating inside the country.

• The IAEA stopped verification activities in Iran after February and has since demanded access it does not have.
• Its board this month pressed Tehran to disclose its near-weapons-grade stockpile and admit inspectors.
• Iran held 440.9 kg of 60%-enriched uranium before the 2025 strikes, a short technical step from weapons-grade.
• The IAEA board had already found Iran in non-compliance with its safeguards obligations in 2025.

Driving the news: The threat lands as the MOU's text remains unreleased and a formal signing is set for Friday. Trump repeated that the nuclear ban is "the only thing that really matters" to him, casting the rest of the framework as secondary.

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What they're saying:

• Donald Trump, president — "They're not going to acquire a nuclear weapon. If they do, all hell will rain down on them."
• Retired Gen. Jack Keane, Fox analyst — warned the deal lets Iran downblend rather than remove material and keep its centrifuges, leaving "weapons-grade" capacity intact.

Yes, but: Trump's allies argue the threat is the verification. The military pressure that produced the deal, this view holds, is what keeps Iran honest, and Vance has said inspectors will return under the MOU. Keane's objection cuts the other way: if Iran keeps cascades and merely dilutes its stockpile, the physical capacity to sprint toward a weapon never leaves the country, inspectors or not.

Between the lines: The threat and the gap point in opposite directions. Maximalist deterrence assumes you will know the moment Iran crosses the line, but the agency built to know that has been locked out since the war began. Naming a red line is easy when the text is secret and the monitoring is suspended, because no one can yet measure the distance to it. The deterrent and the blind spot are being sold in the same breath.

What's next:

• Watch whether the Friday signing restores any inspector access, the test of whether the threat is enforceable.
• The "develop versus buy" wording becomes checkable only when the MOU text is published.
• Hawks like Keane will keep pressing on centrifuges and stockpile disposal, the metrics Trump's summary skips.

When the penalty for cheating is "the ultimate consequences," who has to be watching for the threat to mean anything?

Sources

This report was compiled using reporting from Mediaite, The Times of Israel, CNN, the IAEA, the Arms Control Center, and AP

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