[bloak]

As I understand it, there is no two-letter ISO code for the USSR because when they update the standard they remove countries that no longer exist. In at least one case they have reused a code point: CS has been both "Czechoslovakia" and "Serbia and Montenegro", neither of which currently exist.

As a result, two-letter ISO codes are useless for many potential applications, such as, for example, recording which country a book was published in, unless you supplement them with a reference to a particular version of the standard.

Is there a way of getting the Czechoslovakian flag as an emoji? And did Serbia and Montenegro get round to making a flag?

[happytoexplain]

Ah, I didn't realize they reused codes from ISO 3166-3. I figured, because they keep these regions around in their own set, that was some implication that the codes would not be reused.