I am totally appalled by the loss of innocent lives but I feel that I need to ask a number of questions.
Accepting that there were attempts by apparently Russian backed elements to break away from Ukraine, the incident took place in Ukrainian airspace, where Ukraine still has safety accountability.
Were the Ukrainian government aware, prior to the incident, that the opposition forces were equipped with a missile system that could preduice the safety of traffic flying over the country at high levels? If they were, why did they not take immediate action to declare a temporary restricted/prohibited area, thereby forcing civil air carriers to avoid the airspace?
As an ICAO Contracting State, Ukraine's Air Traffic Management System is required to operate in accordance with a Safety Management System, did this fail?