international group to jointly investigate this. they have diligently and aggressively investigated the circumstances of that crash. how could it be that 300 civilians could be shot out of the sky on a well-marked commercial plane, on a civilian passenger airliner on a normal, not off-track flight? what they determined over the course of this five years of investigating is that the plane was definitely shot down by a russian-made surface-to-air missile. they figured out where it was fired from, they figured out which russian anti-aircraft missile brigade it could be traced to. that kind of missile is shot from a big, bulky, unmistakable anti-aircraft system that is not a little thing that you cover up in the back of the truck. you can t move it in any subtle way. as andrew cramer reports for the new york times, western analysts said it was improbable that anyone other than a senior russian military commander, if not president putin himself, could have ordered the bulky anti-aircraft