Otherwise one would certainly have to question the wisdom of the routing of the A320...
As someone has dully noted, if there is a case of AA fire involved, be it cannon fire or the heat seeking variety, what the heck are commercial airliners doing being routed in that same area, or out of Damascus with all that fighting going on ?????? This could have ended very badly for those passengers and crew. The collision could have brought the airliner down, any raving fruitcake with the AA gun could bring the airliner down, and if they have the heat seeking variety, the missile cannot tell between a military helicopter and a civilian airliner. Someone should pay hell for this. All airlines should have suspended flights in and out of Syria until this mess is over with.