And we believe this information because...? More likely a Russian air to air "OOPS".
There is a report out of Italy saying it was air to air. Early reports are wrong more often than right, but who knows?
Witnesses on the ground in Donetsk saw the missile go up and the plane come down.
Furthermore the US had its satellites trained on Donetsk and painted the actual location of the missile launched and the explosion.
They have these Russian separatists dead to right.