I would not be surprised if there are behind the scenes meetings by all those involved to come up with a way to move past this “unfortunate” event. One thing is clear and the US Assessment is correct: the Russians have been giving heavy weaponry to the rebels along with special forces and officers for such use and applications of weapons. They aren’t even really hiding it. Putin probably wishes the civilian aircraft wasn’t taken down, because it is counter to their slow bleed strategy as there is a disconnect between what Russia says and what they do.
The first thing we should be doing is cutting off all landing rights in Europe and the US for Russian flag aircraft. Then suspend all visa’s to the West for Russian’s and cancel existing visas. Maybe this would wake up the Russian’s that the world is not going to do nothing while Putin tries to reassemble the USSR by force.