On second thought, it still is the US’ business. The goons that killed him and chopped him up weren’t doing it on behalf of his jilted ex. They were following the orders of either KSA or AlQaeda or some other party, and they weren’t doing it because he was remarrying, but because the aggrieved potentate who sent the goons had a problem with what he was writing in WaPo. So this is an assassination for political purposes, carried out under the cover of a diplomatic compound. It’s a matter of deterring assassinations of journalists, and protecting foreign employees of American companies from assassination. Sorry, Teddy. But I’d love to not give a flying f@#$, but I’m afraid this is a matter of concern for the US, for first amendment, US sovereignty, making it safe for people to work for US companies to travel abroad on assignment, and other such frabajaba. That it had to be an employee of WaPo just makes it hurt more. What Trump decides to do about it is another question.
But by all means go to war over a guy that is an enemy of your own country because of some principle that even you don't believe.
Just don't expect people who are not hyped up on LSD to think you are anything but insane.