Why did Trump Block the Strait of Hormuz?

Over the weekend, negotiations talks between the US and Iran failed.

So Trump imposed a full naval blockade of Iran's southern coastline. Starting Monday 10am New York time. No ships in or out of Iranian ports without the US Navy's say-so.

Here's all you need to know plus what it means for Law Firms.

Why does this matter?

The Strait of Hormuz is a narrow strip of water between Iran and Oman. About 20% of the world's oil passes through it every single day. It is the most important chokepoint in global energy.

Iran has been using it as leverage ever since the US-Israeli strikes began in late February.

What is Trump trying to do?

Trump's blockade is his attempt to flip that leverage. The idea is that if Iran is using the strait to fund its war effort through oil exports, cut the exports off and destroy their revenue stream.

But there's already a gap between Trump's rhetoric and reality. His social media post said "any and all ships" in the strait. The actual US military order is narrower: it only covers vessels entering or departing Iranian ports and coastal areas. Neutral ships that haven't called at Iran won't be blocked, though they may be searched for contraband.

How has Iran responded?

The Revolutionary Guards said any military vessels approaching the strait would be treated as a ceasefire violation. Tehran threatened to target all ports in the Persian Gulf and Sea of Oman if its own shipping hubs are threatened.

But there's some hint of diplomacy. Iran is reportedly considering a short-term pause on its own shipments to avoid testing the blockade and keep fresh peace talks alive. If confirmed, that's a de-escalation signal.

Who is feeling the pain?

Asia is bearing the worst of it. Countries that had started buying Iranian oil under a US waiver now find that waiver effectively torn up. Iran had actually been selling crude at a premium (not its usual discount) thanks to that waiver, so the blockade kills a revenue stream worth hundreds of millions since the war started. And US crude isn't a like-for-like replacement for Middle Eastern grades, meaning the supply gap is harder to fill than Trump implies.

How does this impact Law Firms?