David Bernstein has a very interesting post about whether Israel has the "right" to be Jewish.
My correspondent was unaware of any other countries that have an overt ethnic identity, but, judging by immigration laws, there are quite a few, and with a few exceptions (Armenia and Germany), their discriminatory immigration policies exist, unlike Israel's, without any justification resulting from persecution of that group.
For example, according to Wikipedia: "Japanese citizenship is conferred jus sanguinis, and monolingual Japanese-speaking minorities often reside in Japan for generations under permanent residency status without acquiring citizenship in their country of birth." Why does Japan have the right to exist as a Japanese state? Has this question ever been asked? Ireland: "If you are of the third or subsequent generation born abroad to an Irish citizen (in other words, one of your grandparents is an Irish citizen but none of your parents was born in Ireland), you may be entitled to become an Irish citizen" [if, as I understand it, you register properly]. Does Ireland have the right to exist as an Irish state?
I think this is an excellent point. Read the whole thing.