US Blockades Strait of Hormuz as Iran Peace Talks Collapse

The move marks a dramatic escalation in a conflict that has already shaken global energy markets, rattled financial systems, and killed thousands — and it raises the spectre of a wider confrontation with consequences the world is only beginning to reckon with.

How we got here: a timeline

What the blockade actually means

Trump's initial announcement framed the blockade in sweeping terms, but CENTCOM subsequently clarified its scope: the blockade applies specifically to vessels entering or departing Iranian ports and coastal areas — it will not impede ships transiting the strait between non-Iranian ports. In practice, this means the US is targeting Iran's ability to export oil and receive imports, rather than shutting down the strait entirely.

"We can't let a country blackmail or extort the world, because that's what they're doing."

— President Donald Trump, outside the Oval Office, April 13, 2026

Iran's response was unambiguous. Tehran's armed forces accused the US of "piracy," declared its ports are "either for everyone or for no one," and put its military on maximum combat alert. An Iranian defence spokesperson warned that if Iranian ports are threatened, "no port in the Persian Gulf and the Sea of Oman will be safe."

The nuclear impasse

At the heart of the breakdown is a single, immovable demand. The US insists Iran surrender its enriched uranium stockpile and dismantle its ability to produce nuclear weapons. Iran refuses. VP Vance outlined Washington's two non-negotiable conditions: US possession of Iran's "nuclear dust" — its enriched uranium — and a verifiable mechanism ensuring Iran can never again enrich uranium. Tehran, for its part, insists its nuclear programme is civilian and that enrichment is a sovereign right.

Iran's negotiating demands also include war reparations, release of $6 billion in frozen assets, a regional ceasefire covering Lebanon, and — critically — the right to continue controlling and charging tolls in the Strait of Hormuz. That last demand, in particular, was described by Trump as "world extortion."

Global reactions

NATO's response has frustrated Washington. Estonia, France, Germany, and the UK all declined to back the blockade. "If the Strait of Hormuz problem had a military solution, then surely the mightiest military in the world would have already solved it," Estonia's Foreign Ministry secretary-general told Foreign Policy. A senior NATO official told CBS News that the UK is leading a coalition of over 40 nations focused on reopening the strait through non-military means.

Energy markets and economic fallout

Brent crude climbed 7% to hover around $102 a barrel on Monday — up roughly 40% since the war began in late February, when prices sat near $70. US Energy Secretary Chris Wright told the Semafor World Economy Conference that prices would likely keep rising until "meaningful ship traffic" moves through the strait, which he estimated could take several weeks.

What happens next

The ceasefire — however fragile — is technically still holding. Trump said it is "holding well," and left open the door to further talks, saying Iran had reached out. Vance told Fox News that "the ball is in Iran's court." Meanwhile, the Wall Street Journal reported that Trump and his advisers are considering resuming limited military strikes on Iran to break the stalemate — including potential strikes on desalination plants and power-generating infrastructure.

Iran's parliament speaker issued a stark warning of his own, posting a photograph of US petrol prices near Washington D.C. with the caption: "Enjoy the current pump figures. With the so-called 'blockade', soon you'll be nostalgic for $4–$5 gas."

The world is watching a chokepoint that carries a fifth of its oil become the theatre of a standoff between two nuclear-capable powers — one with the world's most powerful navy, the other with sea mines, drones, and nothing left to lose. The next 48 hours will be critical.