"Ethnic Jews should have the same right to a national home as any other ethnic nation." The very essence of ethnicity is that it is determined by descent. Ethnicity by conversion is a circle squared. And as becoming a Jew by conversion is a possibility, your terminology of "ethnic Jews" is nonsense, because "ethnic" and "Jew" is not inseparable. That said quite apart from the "ethnic paradoxon" that descent from a Jewish mother creates a Jew, descent from a Jewish father does not.
U.S. confirms ISIS computer expert killed in air strike (Reuters)
from the article: The impossible forfeit