No, I don't think it has much to do with morality. Its just that some peoples won the wars and hence could return to their homeland. Do you think Jews could hav

No, I don't think it has much to do with morality. Its just that some peoples won the wars and hence could return to their homeland. Do you think Jews could have settled in Israel had they lost the fight in 1948? Or Germans would have been expelled from east of Oder had they won WW2? Even Hongkong had to be ceded back to China only after China became powerful enough to leave no other alternative. Do you think UK would have given back Hongkong if China was as weak as, say, Argentina (see: Falklands war)? Ultimately, land ownership (or its euphemisms like "homes" or "property rights") can only be backed by monopoly on violence, otherwise known as Governments, in that area.