If Chaldeans have our own religion (Chaldean Catholicism) our language (Chaldean neo-Aramaic), and our own culture how can we not be ethnically Chaldeans?! As you said yourself ethnicity can be defined by language and religion. Assyrians speak Assyrian Neo-Aramaic and belong to the Assyrian Church of the East. No one can eliminate my Chaldean ethnicity and culture for the sake of their political agenda; this is fascist and unjust behavior.