It was quite possibly a Ukrainian military operation, but the world wont know until a thorough investigation has been conducted will it?
Which is why the Dutch & Australian governments have repeatedly demanded the Ukrainians cease their military actions in the area around the crash site.
What possible reason would the Ukrainian side have for delaying and interfering with such an investigation, other than to cover its own tracks?
If you really believed that then you would move all your military back away from the shootdown site and allow the Dutch to gather all the evidence, but you don't because you are not finished removing and planting evidence.
Isn't that right???
Anyway we have Bezler and Sapper on record planning the shootdown of a plane that was TOO HIGH to be identified and then shooting it down anyway right at the time MH17 was shot down.
You know -- loose cannon Igor -- and Sapper who can't be found.