Your attempt to poke holes and question Il-76 tragedy is just silly. What is the typical ratio of enforcement agents to prisoners on the transport planes? Russians are just timing this to present a full investigation and reveal evidence to courts/UN at maximum publicity when the timing suits them the best. Why on earth would Russia reveal their cards now so And likUkraine can prepare defense and come up with new version of the events? Having tangible proof that American supplied military hardware was used on Russian territory removes US's plausible deniability defense, and forces them to make a choice. Either hard stop on using missiles on Russian territory or de jure US becomes part of the conflict, neither is a good options, of course US can continues to ignore this, but that would set an even worst precedent where now Iran/Russia/others would be able to directly provide missiles to proxies for attack on US/EU assets. Total diplomacy fail, on one hand holding Iran responsible for their drones used by others, while on another attempting to distance itself and claim US is not responsible that their weapons are used inside Russia 
Edit: In fact it almost seems too perfect of a case for Russia. American missiles take down a plane full of Ukrainian POWs inside Russia, this will be for the books. What do you think this does for F16 and Taurus delivery timelines?
So, you say that 3 guards for 65 POW's is normal number. C'mon, such number of guards are used to transfer random prisoners from court to prison on road convoy. For this operation I guess that at least double digit of security guards would be used.Edit: In fact it almost seems too perfect of a case for Russia. American missiles take down a plane full of Ukrainian POWs inside Russia, this will be for the books. What do you think this does for F16 and Taurus delivery timelines?
Yeah, Russia don't show any proofs just because that Ukrainian wouldn't come with their versionand excuse. If Russia would have undeniable proof, no excuses would help.
And like it would first plane in territory of Russia shot down by Ukraine. And Ukrainians doesn't even hide that they're using Patriot for it, where is the issue? Hiting military targets in territory of Russia is defense, if they would start hitting civilian objects, it would be different question already. And BTW, how you already know that it was American Patriot. Don't forget that Ukraine have Patriot batteries supplied by Germany.
It is so funny that this guy considers like Ukraine is wrong to hit Ruzzian targets. This is a war, Ruzzia is targeting any short of not just military targets but also infrastructure and sometimes clearly and evident just simple civilian targets, but somehow they believe that retaliating is wrong.
Speaking of which... Where is Gerasimov? There seem to be more and more people asking this question. Any clue in your troll farm da?