So you understand every state uses similar dirty tools of power. Where do you start changing that? There is no upside for any big state to unilaterally respect

So you understand every state uses similar dirty tools of power. Where do you start changing that? There is no upside for any big state to unilaterally respect and build international law / UN while others take advantage. It is a mere toothless idea now, these states don't have much incentive to follow it.