On CBC News Network last night they had on a spokesperson for the IDF and he was asked very pointedly "what assurances do we have that you are minimizing collateral damage as we are aware of plenty of civilians that are being wrongly targeted by these attacks"

The response was a very blunt (and paraphrasing again) "we have made an executive decision and you need to understand that these civilian deaths have been accepted as the result of this military campaign."

So officially from the IDF is that they are ok killing civilians.