The latest poll from Russia is proof:
A poll released by the independent Russian pollster Levada on Wednesday has found that a large number of Russians believe that Ukraine shot down Malaysia Airlines Flight 17, with 46 percent saying they think it was brought down by a Ukrainian army antiaircraft missile and 36 percent saying a Ukrainian military plane shot it down (multiple answers were allowed, meaning the percentages do not add up to a hundred and people may have chosen more than one answer). … Almost no one in Russia is buying the story that the rest of the world accepts. Just 3 percent believe pro-Russian separatists in Ukraine might have shot down the plane.
The Dish 