In Europe map, Turkey shortname is TK.
In Middle-East map, it is TU.
In ISO 3166-1-alpha-2-code it is TR ...
In a more general order, do the shortnames refer to a particular standard and which one please ?
I try to validate a functional prototype but I have many problems linking it to any iso country list.
Indeed, very nice job done on your tools
References :
http://www.iso.org/iso/country_codes/iso_3166_code_lists/english_country_names_and_code_elements.htm
http://www.iana.org/domains/root/db/