Yes, the world today is not as it was 26 years ago. That seems pretty obvious. Countries change, governments change, national interests change. What was good

Yes, the world today is not as it was 26 years ago. That seems pretty obvious. Countries change, governments change, national interests change. What was good for the US 30, 50, 100 years ago may not be good for the world of today. How is that a problem exactly?