(CNN) The United States' decision to end airborne refueling support to Saudi Arabia for its war in Yemen means nothing militarily. It is cost-free virtue signaling by the Trump administration.

It's an opportunity to appear a little bit cross over the alleged murder of Jamal Khashoggi while making sure that the Kingdom's strategic trajectory stays on course.

It's a way to appear annoyed that soon after the US called for a ceasefire in the Yemen war, the Saudi-led coalition launched an air and ground assault on the port of Hodeida, which is held by Iranian-backed Houthi rebels.

And it's a way to distract attention from the fact that the French and British, just like their US allies, are continuing much more important military support for the Saudi side in the war.

Ending mid-air refueling by US air tankers for Saudi jets is right up there with a "strongly worded letter."

JUST WATCHED Mattis and Pompeo call for Yemen ceasefire Replay More Videos ... MUST WATCH Mattis and Pompeo call for Yemen ceasefire 00:59

Read More