There is no “international law”. It’s just some term western politicians made to give them legitimacy. The world also doesn’t care since all countries have border disputes and potential conflicts. Freezing/seizing the money is seen as a serious risk now.
>"There is no “international law”. It’s just some term western politicians made to give them legitimacy."
Indeed all law is just some terms made up by politicians. Yet it is given power by those who enter into contracts willingly to abide by them, as you do when transacting business with the west. They knew the rules, and decided that deliberately breaking them was worth the consequences. We will see if that pans out for them.