Let's say this is true. (It's not, as stated, but let's say.)
How does would a government and its army conduct a just war* and kill not a single non-combatant? What laws, policies, procedures, technology, intelligence, etc. would have to be in place in order to accomplish this extraordinary feat.
I'm not asking IF this is a just war, I'm putting out a hypothetical. Imagine whatever you need to imagine to get you to just war*. If it helps, reverse the players. How, then, would the "freedom fighters" of Gaza conduct a just war in which they killed not a single non-combatant?
**If you believe that NO war is just, that's fine. Just a different conversation. I'll approach that if it comes up.