Jewish men must leave their non-Jewish wives. No “gett” (Jewish divorce decree) is required because God does not recognize Jewish intermarriage. AND, because the women were not Jewish, meaning the children were also NOT JEWISH, the children are being left behind as well. If you think that is harsh, understand that God expects His Jewish Covenant to be adhered to in every respect. God says it is life and death…”CHOOSE LIFE!” (Devarim 30:19)
Devarim is Deuteronomy in Hebrew.