“International law” is really just treaties and bureaucracy. For it to have consistent effect it would need to be materially backed by interests ensuring such an institution. It does not. So, instead, it reflects actual geopolitical power imbalances and inconsustent application.

But, and this is the most important part, oppressing countries not only still participate in it, but try to prop up the farce that it is a legitimate deliberative institution. The UN is maintained for PR value, it is a fig leaf. If you can use it to claim your genocidal war is legal, you can put that in your internal propaganda apparatus. When you can’t, well, then you see alternative PR terms being invented to give the same impression lije, “rules-based international order”, which is something that sounds like a reference to international law, but isn’t and can’t be, because the people using the term are actively breaking the relevant international law agreements.

European countries largely do nothing because they are fellow white supremacist US lapdogs feeding from the same teet of global exploitation creared through US-dominated imperialism. And “Israel” is a key player in that domination in the MENA region, helping to destabilize any sovereign action that doesn’t submit to US interests. Supposed European liberal ideals have never been consistently applied, they have been applied on colonial and racial lines since they went the colonial path hundreds of years ago.