"Judaism is not a race, nation or people so it can't assimilate - it is either practised or it is not - and that has applied for millenia. " What do you base this assumption on? Am Yisrael - the people of Israel. That's like saying if a Zulu man stops practicing the traditional ways of the Zulu, he stops being Zulu.
U.S. defense chief tells Congress: Military options remain against Iran (DPA)