I don't have an answer to the question, but perhaps we should keep asking the question of ourselves individually and collectively.
In the meantime, clarity on facts may be useful, despite political overtones suggested by the timing: Ex OSCE vice president shifts onus over downed SU-24 from Turkey to NATO http://www.fort-russ.com/2016/08/ex-osce-vice-president-shifts-onus-over.html
