Donald Trump’s blockade of the Strait of Hormuz has come into force, but ships are reportedly still getting through, including a Chinese linked tanker.

So, what is actually going on right now? How long could this blockade last and what happens if American forces try to seize a Chinese linked vessel? 

On this episode of the Fourcast, Alex Thomson is joined by retired US Rear Admiral Mark Montgomery and Times columnist and contributing editor Cindy Yu.