Saudi Arabia’s attempt to intervene in Yemeni politics was a fiasco. Biden’s attack was not an intervention in the ongoing civil war; he simply wants to stop the Iranian=backed attempt to disrupt shipping in the Red Sea and thus increase prices all over the world, which is a completely legitimate objective under international law. The choice of targets was consistent with that objective.
This does not mean the war is about to widen. If the attacks were successful–and we were told that they were–the threat has been diminished, and there will be little reason to repeat them in the foreseeable future.
What’s interesting here is that the Chinese, who have as much to lose from the Houthi actions as we do, aren’t saying or doing anything to protect freedom of navigation. They are effectively putting their relationship with Iran and its proxies above their own economic self-interest in an effort to make life more difficult for America and the EU.