Geez, get a grip already, gryfin.
Israel has a conscience. It knows that innocent people were killed and have suffered because of the military action it was forced to undertake, and Israel knew this to be the case from the outset. That's why it took so long to decide to finally attack Hamas - because it knew of the resultant devastation that would be inflicted upon Gaza and Gazans.
During a medical procedure to excise cancerous cells from a body, it is always necessary to remove healthy cells, as well, whether you remove the cancer surgically, or using chemotherapy (which kills many healthy cells). Unfortunately, this is our species' state of technology at the moment. We know of no other ways to get rid of cancer.
Similarly, Israel was put in the position of having to destroy a number of civilian lives and structures in order to eradicate Hamas from Gaza.
I believe - and you obviously disagree - that Israel sincerely tried to limit the number of civilian casualties incurred in the conflict. If they hadn't, the body count could have been much, much higher.
If there were a safer and less invasive way to root out Hamas, you can be sure Israel would have adopted that method. But there isn't, and so Israel had to resort to urban warfare, which always claims collateral damage. C'est la guerre, as the French are fond of saying.
If legal claims arise against Israel as a result of this traumatic but necessary operation, they must be investigated as necessary and defended if possible.
Nothing wrong with making preparations for this.
Ohhhh...I get it.....maybe a Palestinian school book might write something different that what the rest of the world's kids read