The answer to your question is never. Over a million people enompasses sufficient scope to gene pool mixes - larger than in most Jewish communities in the world (beside Israel and the USA). I've never mentioned your Aborigines so I don't know why you are bringing them up in a post to me. As far as I know those over the age of 18 are adults and can decide for themselves if they want to drink and smoke themselves to death. Just like all Palestinians over 18 are adults and decide whether they want to spend their money on weapons or health care. You are exremely patronizing to those who are not as "white" or "civilized" as you are. I wonder why that is.
Aden hotel used by Yemen goverment hit by grenade (Reuters)
from the article: Study: Israeli Jews live four years longer than Israeli Arabs