Reading/speculating between the lines some ...
* The Iranian government could have known within a very few hours - if not minutes - that PS752 was downed by a missile.
* Information about airport flight operations apparently was not communicated to the military, down to the battery command level;
* Either communication of what the air traffic people knew to the supreme mucky-mucks was delayed for days, or the supreme mucky-mucks were trying to brazen out what they knew was a lie for several days.
* PS752 was NOT the only commercial plane in the air at the time. With commercial air traffic information not being adequately communicated to and within the military, every one of those planes and their hundreds or thousands of passengers were thus endangered.
* Plus or minus a few low-level scape-goat heads rolling, NOTHING is likely to be learned from this F-Up by Iran.