>Quick: name a country which doesn't think its ways are the obviously correct ways, and that the world wouldn't better if only everyone else would adopt their standards.
>Europeans are convinced that we should maintain a bit of aloof isolationism. The Middle East is convinced that a Muslim theocracy would benefit everyone. Much of Asia wishes we could get over the recent notion of individual rights instead of duties to country.
These aren't all the same. A worldwide Muslim theocracy would affect everyone, including people who don't want it. Whereas Europeans being isolationist doesn't affect anyone except Europeans. Similarly, Asians pushing duties to country really only affects Asians in the concerned countries.
Yes, everyone (nations and individuals alike) think that their ways are the correct ways, and everyone else should be more like them. However, if you're not actively pushing yourself and your ways on other people, there's no ethical problem. If a bunch of European nations say "we want to keep to ourselves except maybe for some trade", that isn't hurting anyone else. Other places are free to run their nations as they please; they can establish theocracies if they want, or not. However, nations that have foreign policies which emphasize interventionism and pushing their ways on others are in a different boat. Some Muslim nations do try to push their ways, but they don't really have much power to back up those desires (if they ever got that power, that would be rather scary). However the US and Russia (moreso the US these days) and also China not only have the power to be bullies, but they actively engage in bullying behavior on the international level.