Russian experts requested access to materials pertaining investigation of the shoot-down of Boeing in Ukraine, but were denied it.
That would put the Ukrainians as the main suspected. But why would the do it? Could it be some kind of mistake?
Well, actually, it's the Dutch, who did the denying.
As for Ukraine, they are still to release the ATC communication - both civilian and military. The civilian ones were seized by SBU right after the shoot-down and are kept classified too.
Why would they do it? For that you need to understand one simple thing - Ukraine is an occupied state, controlled from across the ocean. Ukraine stopped doing what is good for Ukraine a long time ago. That shoot-down was not mistake - it was a premeditated false flag to sick the world onto Russia and to discredit the freedom fighters of Novorossia. But this false flag didn't go entirely as planned, so tracks need to be covered by the perpetrators.