Poor quality articles.

Here's an actual industry source which captures the whole story in the headline https://www.lloydslist.com/LL1155836/Weve-just-seized-a-tank...

I stand corrected, thank you.

I still don’t approve of it, but it does appear to be “legal”

It's generally considered best practice to detain these vessels as they tend to present a danger to ... well, basically everyone.

It's really a good thing the US did this, one less dangerous stateless vessel at sea. Trump admin does lots of bad things, this is beyond reproach.