That was my first guest.
Got one of those Russian supplied Buk missile systems like the Ukranians used to shoot down Malaysia Airlines Flight 17. I guess the radar isn’t so accurate on those bad boys. Everything looks like a target.
If it took off from Tehran that would be unlikely.
Lots of old manpads in Iran from the Shah days, Redeyes IIRC. they could easily take down a 737 at takeoff.
Trigger happy militia having just been issued some?