It's an American conspiracy. That MH370 plane that disappeared somewhere in the area of the Indian Ocean was actually flown to the American military base at Diego-Garcia. From there, it was moved to Holland, where it was loaded with corpses. Following takeoff, the pilots parachuted out and the plane continued on autopilot until, over Ukraine, an onboard bomb was detonated.
Cunning in its execution, the Americans made it look as though a Russian SAM might have blown MH17 out of the sky, killing 300 people, but it was all a lie; they created a "flight of the dead" in order to justify yet another intervention.
At best, the crash is an unfortunate accident on the part of the Ukrainian military that the West is trying to pin on Russia, which had nothing to do with it; at worst, it is all part of a nefarious conspiracy to drag Russia into an apocalyptic war with the West.
That's their story, and Russian media's sticking to it. Meanwhile, evidence seems to indicate that separatists did indeed use a Russian SAM to take out the plane:
Kiev (AFP) - Alleged intercepted phone conversations released by Ukraine’s security service of pro-Russian rebels discussing how they shot down Malaysian airliner MH17 are genuine, the US embassy in Kiev said Sunday.
Which is code for "Yes, the NSA recorded that call, too."