Trump orders blockade of the Strait of Hormuz after Iran talks fall apart

The first commercial vessel has crossed the Strait of Hormuz under US military observation, marking the beginning of a sweeping blockade ordered by President Donald Trump after last week's nuclear negotiations with Iran ended without agreement. The move, announced late Sunday on Truth Social, directs the US Navy to restrict all ship traffic to and from Iranian ports, effectively sealing off one of the world's most critical energy chokepoints.

According to US defense officials, the blockade applies to any and all ships attempting to enter or leave the strait, though the first vessel to pass did so after being cleared for non-Iranian cargo and destination. The Pentagon has not confirmed how many ships are currently waiting to transit, but satellite data suggests dozens are anchored near the entrance, holding position as the situation unfolds.

The Strait of Hormuz handles about 20% of the world's oil supply, and even the threat of disruption has sent shockwaves through global markets. Crude oil prices surged more than 7% Monday morning, with Brent crude briefly topping $110 a barrel. Shipping insurers have already begun adjusting risk assessments, and several major energy firms are rerouting vessels as a precaution.

Trump framed the blockade as a necessary response to what he called Iran's refusal to negotiate in good faith. In his post, he warned that any ship supporting Iranian interests would be turned back or seized. "We're putting on a complete blockade," he wrote. "Iran knows what they did." The White House has not issued a formal legal justification, but national security sources say the order is being executed under existing authorities related to maritime interdiction.

Reaction from US allies has been cautious. European leaders have called for de-escalation, while Gulf states are quietly preparing for potential retaliation. Iran has not yet issued a direct military response, but state media have denounced the blockade as an act of war and vowed "a crushing reply."

Analysts warn the situation remains volatile. While the US has the naval strength to enforce the blockade for now, maintaining it long-term could stretch resources and invite confrontation. "This isn't just about oil," said one Middle East strategist. "It's about who controls access, and how far each side is willing to go."

For now, the world is watching one narrow strip of water where global trade, military power, and political will are all converging. The first ship made it through, but no one knows yet how many will follow-or what might happen to the next one that doesn't.