3 points
They had faith that people who got to power would use it in good faith (and get there in good faith) while or after having fought a war with a power that they believed wasn’t being used in good faith.
I just wonder how much longer this system can hold up for. It’s got different parts that conflict with itself but different people value different parts of it to the point that getting rid of any of it is going to be, ah, a bit rough.