The only purpose of international law is to point fingers at your enemies while ignoring it when you want to achieve your goals.
And, an important point...your weaker enemies. It's the basic nature of law, that it comes from the top down; only those already more powerful can enforce it. So international law is used as a tool by the strong/winners to enforce their will on the weak/losers.
And, an important point...your weaker enemies. It's the basic nature of law, that it comes from the top down; only those already more powerful can enforce it. So international law is used as a tool by the strong/winners to enforce their will on the weak/losers.