The Red Sea is the most trafficked trade route in the world, and now the US Navy and a group of militant Houthi rebels are going to war over it. The Houthis are attacking ships it says are linked to Israel and its allies; America is desperately trying to stop them. I mean, America might not get directly involved in the Israel-Gaza conflict, but you bet they'll protect their trade routes. The stakes couldn't be higher — if the US can't prove they have this under control, plenty of other groups around the world might decide to try their hand at blocking global trade as well.