It appears the crew that manned that 9K37 Buk missile system didn't have enough training and instead of shooting down what was supposed to be a Ukrainian An-26, they accidentally shot down a jet airliner.
That’s my early thinking on this.
Moronic Russian backed separatist gets the weapon and uses no judgement to lock on a commercial airliner and shoot it down. So happy with himself is he that he brags about. Then...
I don’t think Putin orders or okays this, but his manipulations of the situation that got us here make him as guilty as if he pulled the trigger.
The guy is the consumate hot-shot dumb ass.