WWJD – and does it matter?

Reports are that, Islamic State having brutally killed a downed Jordanian pilot, Jordan is eager to strike back.  CNN’s expert  “said it’s possible that Jordan could retaliate by executing al-Rishawi, the convicted terrorist. But he believes the United States and others will encourage Jordan to not take that step, and instead to take the fight directly to ISIS.”  Reuters says that, according to a source, “Rishawi would be executed ‘within hours’.”

So the WWJD, is of course, meant both as “What will Jordan do?” — that is, speculating on whether Jordan will take this step — and “What would Jesus do?”  What is the right “Christian” response?  And the “does it matter” is whether, in the end, the United States should be in the business of stepping in and telling Jordan that Civilized Nations don’t execute POWs even if that’s exactly what the other side is doing.

Thoughts?