I don't know if you're a Korean or just a fan of them, but we here in the West actually have a bit of a different worldview. You know, "we're all in this together," "treat others the way you'd want to be treated," "try to minimize the amount of suffering overall," etc. Especially Europeans don't adhere to what you're saying about only having moral obligations towards their own people. And that's no surprise, since the definition of what "your own people" actually is, is a bit fuzzy. This is both due to political reasons (the EU) as well as cultural reasons (the internet bringing people closer).