By international law only israel has committed a war crime as it condones resistance against occupation by any means necessary.
By international laws, also fighting without an uniform is a crime.
By international laws, you must not use human shields.
The Geneva convention also stipulate that if you don't apply it with me, you have no right to ask to be applied to you.
So, we are still sure that only one side is committing a war crime ? If not, why not ask also to the other side to respect the international laws.
And if we decide this is not a war but an act of terrorism, why we should ask to the victim side (in this specific occasion) to respect a law that do not apply to the situation and let the offending side to do what it want ? Only because they are playing dirty ?
Also the israeli blockade on Palestine is one of the most flagrant violations of humanitarian law and already “sanctions” Palestinians.
Gaza has a border with Egypt and, as far as I know, Israel cannot do anything to close this border (aside attacking Egypt of course). So, at the minimum, we should also punish Egypt for blocking the Palestinians.