Originally Posted by Osem

Guess it depends on what you accept as 'proof'. If the balance of probability from various sources is that Russian backed rebel forces in Ukraine did this (and apparently they'd have required Russian missiles to do it) then I think the rest of the world will draw their own conclusions and I'd expect some sort of repercussions probably in the form of more sanctions from the west.

I guess a lot will depend on where the wreckage is and what's found.