Says that there is a possibility that a missile downed the passenger jet over Iran but it has not been confirmed yet

All the signs are pointing towards that and Iran will really have a lot of explaining to do if that is the case. Did someone carry out the wrong military operation when they were supposed to be striking unoccupied land instead?

This case will probably still drag on for quite some time yet with Iran's unwillingness to fully cooperate with the matter. A real tragedy indeed for those affected by this.