To the people downvoting the above comment: Houthis declaring US and UK ships open to attack as retaliation to the drone strikes in Yemen, then also extending this to the ships operated by the latest coalition against blocking the Red Sea sea traffic against Israeli profits is a would have been a no-brainer when you consider attacks on allies of belligerent countries are viable when it comes to Russian-Ukrainian war or any non-western supported war.

Houthis have been waging these attacks against with the aim of pressuring the allies of Israel, the decades long genocide committing apartheid, rogue and terrorist state, away from supporting its latest and most intense war crimes. They have been accomplishing this pretty well, and this is just an economic pressure akin to embargoes the western hemisphere applies to whoever they don't like at that moment. There will be literal and figurative friendly fires, attacks on bystanders, and unintended consequences to some extent, of course, but as per the wikipedia compilation, mostly the countries, companies and ships that keep trading with Israel despite their extensive war crimes are affected from the Houthi attacks, while the rest are pretty much operating unhindered.