Hm. What a curious statement to make, since you've already been informed there won't be a trial under international law. Which, of course, you already knew on beforehand. And I would bet good money there won't be a trial under US law either. And yet, you are arguing for justice? Would you then join me in calling for a trial?
No, it's just under US law it's legally permissable to stall a proceeding indefinitely for no reason. It's also only under US law it's almost encouraged to change the alleged crime during the trial, as well as bring alternate defenses to alternate prosecutions in order to have your sentence reduced. However, none of this is allowed under US military law, which is a very stringent process that does not take into account more than a specific kind of crime, etc.

And this, as if you did not know, is the reason why US soliders will not be prosecuted for murder under the courts martial system in cases such as these. That is, in favour of an inquest that simply seeks to determine whether the ROE was followed. Such a curious system of "justice", isn't it. Reliable, of course, but curious nonetheless.