If fifteen representatives from, among others, China, Jordan, Egypt, Russia, Brazil, and France got together and condemned Israel, no one would care. That includes most of the people in China, Jordan, Egypt, Russia, Brazil, and Fra- ok, maybe the people in France would care (they're a little funny about the whole "people should care what we think" thing). But because those fifteen bureaucrats happen to be judges on the International Court of Justice, everyone treats their decisions as sacrosanct. As if someone who thinks that the law is just a particularly legitimate-sounding way of holding on to raw power suddenly becomes a legal scholar when they move to the Hague. Gerald Steinberg has an extended article on the transformation of international law into another weapon in anti-Israel political warfare. You should read it.
As those temperate and perceptive legal minds instruct Israel, in their temperate and perceptive way, that self-defense is against international law, on the ground Israeli human rights concessions get little girls killed: