Earlier quoted context omitted.
Huh? The country is called "United Kingdom of Great Britain and Northern Ireland", or the UK for short. Strictly speaking, if you talk about Great Britain, you're excluding Northern Ireland, but politically GB isn't a country... Wikipedia says "Great Britain is an island in the North Atlantic Ocean", although historically there was also the Kingdom of Great Britain.
Well, go complain to ISO then, not me. https://en.wikipedia.org/wiki/List_of_ISO_3166_country_codes... Edit: Also, if you've ever seen UK teams compete in international sports, all their athletes have "GBR" on their team uniforms.
ISO 3166-1:2020: Codes for the representation of names of countries and their subdivisions — Part 1: Country code
ISO 3166-2:2020: Codes for the representation of names of countries and their subdivisions — Part 2: Country subdivision code
ISO 3166-3:2020: Codes for the representation of names of countries and their subdivisions — Part 3: Code for formerly used names of countries
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