whats the difference between a bomb exploding in an civilian bus VS bombs exploding in Gaza buildings?-
No difference-
the difference is crucial, bus explosion deliberately target civilians, building explosion is targeting stocks of missiles, explosives hamas members etc... IDF notifies the residents and neighbors before attack, IDF will not attack if they know there are civilian occupants in the building, sometime there are malfunction and IDF do mistakes, IDF is not perfect in operation, there are no perfect systems.