API Address format - in particular country field not respecting ISO3166

Hi all,
I am trying to make some stats from the API by countries. I have a copy of the deals and organizations in a local database.

When I look at a deal’s organization (or directly the output of the API /v1/organizations/ ), one field is present, if the address was geo-coded, named “address_country”.

the problem is that this field does not respect ISO3166; for example I can find “Italy”, “Italie”, and “Italia” in the database. Is there a way to find the country of an organization without pulling all the translations of the country name?
Many thanks for your insights!
Fleurou